This Act deploys several key legal constructs and geographic delineations. Understanding these is necessary to apply the statutory mechanics.

• Cooperative scheme (Sch 1 cl 1): The term labels the legislative and administrative framework in Schedule 1 for applying State criminal law offshore. The intergovernmental agreement is an explicit element of the cooperative scheme (Sch 1 cl 1).
• Adjacent area, inner adjacent area, outer adjacent area (Sch 1 cl 1 and cl 14-15): The adjacent area for each State is a mapped offshore zone defined by reference to Commonwealth petroleum legislation and the continental shelf (Sch 1 cl 14). The inner adjacent area is the part landward of the State baseline but within 12 nautical miles and is subject to State law by force of State law (Sch 1 cl 1 definition; Sch 1 cl 2(1)). The outer adjacent area lies seaward of the inner adjacent area and is the subject of Commonwealth application of State substantive law (Sch 1 cl 2(2)).
• Substantive criminal law and law of criminal investigation, procedure and evidence (Sch 1 cl 1): The scheme distinguishes substance (offence creation, defences, confiscation, restitution and related interpretive provisions) from procedural/investigative law (investigation, arrest, custody, bail, charges, preliminary examinations, sentencing procedures and rules of evidence). This distinction determines which legal regime applies where (Sch 1 cl 1 definitions; Sch 1 cl 2-3).
• Division of legal competence (Sch 1 cl 2-3): Substantive offences are applied regionally (State law in inner adjacent area by State law; in outer adjacent area by Commonwealth application of State law) (Sch 1 cl 2(1)-(2)). Procedural law follows the identity of the actor and the nature of the proceeding: Commonwealth investigative acts are governed by Commonwealth law; State authorities acting in their administrative areas are governed by State law; judicial proceedings are governed by the law of the jurisdiction in which the proceeding is commenced (Sch 1 cl 3(2)(a)-(c)).
• Intergovernmental agreement (Sch 1 cl 5-6): The Attorney‑General of the Commonwealth and participating State Ministers may agree the division of responsibility. The agreement is binding on where charges may be brought; courts must stay charges brought contrary to it on application (Sch 1 cl 5-6; s 6 requires Gazette publication by the Minister).
• Consent regime for foreign-flagged ships (Sch 1 cl 7): The Commonwealth Attorney‑General must give written consent before a charge can proceed to hearing or, for indictable offences, to committal where the offence is alleged to have been committed on or from a foreign ship registered in another country that has jurisdiction under international law (Sch 1 cl 7(1)). The AG must take into account the views of the country of registration (Sch 1 cl 7(2)). Absence of consent does not stop arrest, charge laying, extradition, remand, or bail procedures but refusal triggers a mandatory stay (Sch 1 cl 7(3)-(4)).
• Evidentiary presumption (Sch 1 cl 4): Once an element of the offence that is an alleged act, omission or state of affairs is proved, an allegation that it occurred in the adjacent area is presumed to be proved, in the absence of proof to the contrary.
• Classification of offences for the scheme (s 5): The Act prescribes categories,summary offences, minor indictable offences, and major indictable offences,based on the maximum penalty attached to the offence (s 5). This classification is "for the purposes of the cooperative scheme" and therefore governs procedural treatment and likely the rules applicable in preliminary examinations and committals.
• Regulation-making allocation (s 7; Sch 1 cl 12): The Governor may make regulations for the Act generally (s 7(1)) but not for the cooperative scheme (s 7(2)). The Governor‑General, however, may make regulations to carry out the cooperative scheme, and those affecting inner adjacent areas require participating State Minister agreement (Sch 1 cl 12(1)-(2)). This creates a federal regulatory gate with State concurrence for inner bands.
• Administrative assignment and commencement (s 2; s 8): Commencement is by proclamation (s 2). Until otherwise arranged under the Administrative Arrangements Act, the Act is administered by the Minister for Justice and Industrial Relations and that Department (s 8).

These concepts interlock to create a layered legal regime where the substantive criminal rules derive from State law applied in different maritime bands while procedural law is applied according to who is acting and where legal proceedings are commenced (Sch 1 cl 2-3). The cooperative scheme is implemented and organised through an intergovernmental agreement (Sch 1 cl 5), with publication obligations (s 6) and a specific consent gate for foreign‑flagged vessels (Sch 1 cl 7).

The Act affects a defined list of actors and interests by altering legal authority, forum conditions, procedural regimes and evidentiary presumptions. The statute itself identifies who is affected; practical effects can be read from those provisions.

• Offenders and suspects on ships in adjacent areas: Persons who commit acts in the inner or outer adjacent areas may be prosecuted under the substantive criminal law of a State applied under the scheme (Sch 1 cl 2(1)-(2)). If an offence occurs on or from a foreign ship registered overseas, the Commonwealth Attorney‑General’s consent may be required to proceed further (Sch 1 cl 7(1)).
• Ship operators and owners: "Australian ship" and "foreign ship" are defined specifically (Sch 1 cl 1). An Australian ship includes ships registered in Australia, ships operating from an Australian base and not registered elsewhere, and Defence Force vessels (Sch 1 cl 1). The status of a ship affects whether AG consent is required and which laws can apply. Operators of foreign ships face the particular risk that prosecutions may be stayed if the AG declines consent after considering the flag state’s views (Sch 1 cl 7(1)-(4)).
• Commonwealth agencies and authorities: The law of the Commonwealth governs investigations, procedures and acts conducted by Commonwealth authorities (Sch 1 cl 3(2)(a)). Commonwealth authorities conducting investigations may therefore have to apply different procedural rules than State authorities even when the substantive offence is the same (Sch 1 cl 2; Sch 1 cl 3).
• State police and prosecuting authorities: State law is the substantive source for offences and State procedural law applies to State authorities acting within their area of administrative responsibility (Sch 1 cl 2(1); Sch 1 cl 3(2)(b)). Participating State Ministers are parties to the intergovernmental agreement allocating administrative responsibility, which may be exclusive or concurrent (Sch 1 cl 5(1)-(2)).
• Courts: Courts hearing charges must observe the intergovernmental agreement allocation; a charge brought contrary to the agreement may be stayed on application (Sch 1 cl 6(1)-(2)). In a Commonwealth judicial proceeding Commonwealth law governs, and in a State judicial proceeding State law governs, irrespective of whether the substantive law arises under another State, the Commonwealth or the law applicable in the adjacent area (Sch 1 cl 3(2)(c)).
• Defence counsel and accused persons: The evidentiary presumption about locus (Sch 1 cl 4) shifts the burden on that element, subject to rebuttal. If a charge is on a foreign ship the absence of AG consent may not prevent preliminary actions (Sch 1 cl 7(3)), but a final AG refusal will produce a mandatory stay (Sch 1 cl 7(4)). The interplay of multiple jurisdictions’ substantive and procedural laws creates variance in procedural protections depending on who conducts the investigation and where proceedings are commenced (Sch 1 cl 3).
• Regulators and rule‑makers: The Act limits who may make secondary legislation for the cooperative scheme. The Governor cannot make regulations for the cooperative scheme (s 7(2)), whereas the Governor‑General may make regulations to carry out the scheme, and regulations affecting inner adjacent areas require State Minister agreement (Sch 1 cl 12).
• Governments and diplomats: The Commonwealth Attorney‑General must consider the views of the flag state before granting consent for prosecution on a foreign ship (Sch 1 cl 7(2)). The power to decline consent and the mandatory stay mechanism (Sch 1 cl 7(4)) creates an institutional point where foreign relations and prosecutorial policy intersect.
• Entities relying on extraterritorial State law: The scheme does not exclude State laws that are capable of operating extraterritorially consistent with the scheme (Sch 1 cl 8), but a State or the Commonwealth may exclude certain laws by regulation (Sch 1 cl 9). Persons and businesses relying on known State criminal laws should check whether any State law has been excluded by regulation from the scheme’s ambit.

Who pays and who decides. Decision‑making nodes created by the Act include the Commonwealth Attorney‑General (consent for foreign‑flagged prosecutions, Sch 1 cl 7), participating State Ministers (intergovernmental agreement, Sch 1 cl 5), the Minister required to publish the intergovernmental agreement in the Gazette (s 6), and the Governor‑General and Governor as regulators under their separate powers (s 7; Sch 1 cl 12). The enforcement burden falls on the law enforcement authorities of the Commonwealth and States, acting within their allocated areas under differing procedural rules (Sch 1 cl 2-3).

The Act creates a set of statutory duties, procedural rules and correlative rights affecting governments, enforcement agencies, courts, accused persons, victims and foreign states. The most concrete statutory duties and rights are below.

Duties on governments, officials and Ministers

• Publish the intergovernmental agreement and amendments in the Gazette (s 6). The Minister is obliged to procure publication.
• Enter an intergovernmental agreement allocating responsibility for administering and enforcing maritime criminal law (Sch 1 cl 5 permits but does not mandate entry; s 4 ratifies the cooperative scheme to the extent of State competence).
• Commonwealth Attorney‑General must give written consent before certain foreign‑flagged ship prosecutions progress to hearing or, for indictable offences, to a committal, and must take into account views of the country of registration (Sch 1 cl 7(1)-(2)). The AG must grant or decline consent; a decline triggers a mandatory stay in court (Sch 1 cl 7(4)).
• Governor‑General may make regulations to carry out the cooperative scheme (Sch 1 cl 12(1)); regulations that affect the inner adjacent area require participating State Minister agreement (Sch 1 cl 12(2)). The Governor may prescribe regulations for the Act generally but not for the cooperative scheme (s 7(1)-(2)).

Duties on prosecutors, police and authorities

• Authorities must act according to the law that governs their investigative or procedural acts: Commonwealth law for Commonwealth authorities and State law for State authorities acting within their area of administrative responsibility (Sch 1 cl 3(2)(a)-(b)). This is a direct operational duty regarding which procedural rules apply.
• Prosecutors must ensure charges are consistent with the intergovernmental agreement, because a charge brought contrary to the agreement must not be brought and is subject to a permanent stay on application (Sch 1 cl 6(1)-(2)).

Rights and procedural consequences for accused persons

• A court must permanently stay proceedings if the Commonwealth Attorney‑General declines consent in cases where the consent requirement applies (Sch 1 cl 7(4)). This is a substantive procedural right for accused persons in the limited class of foreign‑flagged ship matters covered by the consent regime.
• Evidentiary presumption: Once an act, omission or state of affairs that is an element of the offence is proved, an allegation that it occurred in the adjacent area is taken to be proved unless contrary evidence is adduced (Sch 1 cl 4). This affects both prosecution and defence strategies; the presumption is rebuttable.
• The classification of offences for the cooperative scheme is statutory: offences are summary, minor indictable or major indictable depending on specified maximum penalties (s 5). This affects trial modes, committal procedures and sentencing frameworks where the scheme applies.

Rights and duties relating to regulatory and administrative review

• The Administrative Decisions (Judicial Review) Act 1977 does not apply to a decision taken under a State law that applies to investigations, procedures and acts by State authorities under Sch 1 cl 3(2)(b). That is an explicit exclusion of a Commonwealth procedural review mechanism (Sch 1 cl 3(5)).
• The Acts Interpretation Act 1901 applies to the scheme as if it were a Commonwealth Act (Sch 1 cl 11), making standard interpretative rules applicable.

Other operational duties and limits

• The scheme does not apply to Area A of the Australia‑Indonesia Zone of Cooperation (Sch 1 cl 10), so no duty arises under this Act for conduct in that area.
• The scheme does not confer legal effect on a substantive criminal law provision if that provision is incapable of applying in an adjacent area or is expressly limited to a place within the State (Sch 1 cl 2(3)(a)-(b)). This limits the duty to apply State criminal provisions offshore to those capable of extraterritorial operation.

Each duty or right in the scheme is accompanied by a concrete legal mechanism in the Schedule: allocation of law by territory for substantive law (Sch 1 cl 2), allocation by actor for procedural law (Sch 1 cl 3), intergovernmental contractual allocation enforced by stay (Sch 1 cl 5-6), evidentiary shifting by presumption (Sch 1 cl 4), and consent mechanisms for foreign‑flagged vessels (Sch 1 cl 7). The Ministerial publication duty (s 6) and regulation constraints (s 7; Sch 1 cl 12) also prescribe administrative obligations for executive action.

The Act does not itself create new criminal offences or prescribe bespoke penalties for conduct at sea. Instead, it prescribes mechanisms for applying existing State offences offshore and for classifying offences for the cooperative scheme. Enforcement consequences and penalty structures flow from the State substantive laws that are applied under the scheme. Key enforcement and penalty‑related features in the Act are procedural or jurisdictional.

Classification and consequence for procedural mode

• Offences are classified for the purposes of the cooperative scheme according to maximum penalty (s 5):
  • Summary offences: maximum penalty of fine or imprisonment not more than 2 years (s 5(a));
  • Minor indictable offences: more than 2 years but not more than 5 years imprisonment (s 5(b));
  • Major indictable offences: more than 5 years or indeterminate term (s 5(c)).
• Classification under s 5 affects whether a matter proceeds summarily or on indictment within the cooperative scheme’s processes. The Act ties the classification to penalty maxima rather than to specific State procedural labels.

Prosecution constraints and stays

• A charge brought contrary to the intergovernmental agreement must not be brought and is subject to a mandatory permanent stay on application by the Commonwealth Attorney‑General or participating State Minister (Sch 1 cl 6(1)-(2)). This imposes an enforcement limit: the intergovernmental agreement can allocate prosecutorial space and prohibit overlapping or conflicting charges.
• For alleged offences on or from an overseas‑registered ship where the registering country has international law jurisdiction, prosecution cannot proceed to hearing or, for indictable offences, to committal without the Commonwealth Attorney‑General’s written consent (Sch 1 cl 7(1)). If the AG declines, the court must permanently stay proceedings (Sch 1 cl 7(4)). Absent consent does not prevent arrest, charge laying or extradition steps (Sch 1 cl 7(3)), but the final enforcement outcome may be a stay.

Evidentiary effects relevant to enforcement

• The evidentiary presumption in Sch 1 cl 4 means proof of an element that is an act, omission or state of affairs permits a prosecutor to allege the location in the adjacent area and rely on a presumption that it occurred there, unless the defence proves otherwise. That arguably lowers prosecution evidentiary burdens on proof of locus but is rebuttable.

Administrative and review limitations affecting enforcement

• The Administrative Decisions (Judicial Review) Act 1977 does not apply to decisions under State law that apply to State authorities under Sch 1 cl 3(2)(b) (Sch 1 cl 3(5)). This restricts a Commonwealth avenue for judicial review of certain State administrative acts connected to maritime investigations.
• The scheme excludes specified State and Commonwealth laws by regulation where the regulation so provides (Sch 1 cl 9), potentially removing certain offences and enforcement mechanisms from the scheme’s reach where regulators exercise that power.

Operational enforcement mechanics

• The substantive penalties that apply are those in State law as applied extraterritorially by the cooperative scheme (Sch 1 cl 2). Enforcement agencies must therefore consult State statutes to determine applicable maximum penalties and sentencing frameworks.
• The Act leaves the mechanics of arrest, custody, bail, remand, charging and committal to the law of the authority involved (Sch 1 cl 3). That can produce different enforcement practices depending on whether a Commonwealth or State authority acts, and whether the proceeding is Commonwealth or State judicial proceeding (Sch 1 cl 3(2)-(3)).

In sum, the Act creates no new penalties; it allocates which existing penalties and enforcement procedures apply offshore and prescribes intergovernmental and Attorney‑General gates that can limit whether enforcement actions proceed to trial. Practitioners must therefore map the applicable State substantive law (s 5 classifications), the identity of the enforcing authority (Sch 1 cl 3), and any intergovernmental agreement or AG consent constraint (Sch 1 cl 5-7) to forecast enforcement outcomes.

The Act is intentionally interstitial: it interfaces with State substantive criminal law, Commonwealth procedural and interpretative law, international law principles (especially on flag state jurisdiction), and multiple specified Acts. The Schedule frequently cross‑references existing Commonwealth Acts to define geographic scope.

Direct cross‑references and primacy rules

• The Acts Interpretation Act 1901 applies to the cooperative scheme as to a Commonwealth Act (Sch 1 cl 11). This means standard Commonwealth interpretative rules affect reading of Schedule 1.
• The Seas and Submerged Lands Act 1973 and the Petroleum (Submerged Lands) Act 1967 are used to define baselines and adjacent area boundaries (Sch 1 cl 13-15 refer to those Acts and Schedule 2 of the Petroleum Act). The precise boundary coordinates and definitions for the adjacent areas are therefore determined by those Acts’ provisions and related proclamations.
• Sch 1 cl 3(3) provides that the rules in cl 3 operate to the exclusion of any Commonwealth or State law inconsistent with it. Sch 1 cl 3(4) further provides that later Commonwealth or State laws must be construed subject to cl 3 unless they expressly override it. Those are explicit primacy and non‑derogation rules allocating procedural competence while preserving ability to override by express language.
• The Administrative Decisions (Judicial Review) Act 1977 is explicitly excluded from applying to State decisions under Sch 1 cl 3(5). That creates a limited carve‑out from a Commonwealth judicial review statute.

Intergovernmental agreement and court process

• Charges must conform to the intergovernmental agreement; a charge brought contrary to the agreement may be stayed (Sch 1 cl 6(1)-(2)). However, a court’s jurisdiction is not affected by contravention of the agreement (Sch 1 cl 6(3)(a)) and the court will not typically enquire into compliance except on application under cl 6(2) (Sch 1 cl 6(3)(b)). This is an interaction between contractual intergovernmental arrangements and ordinary court process.

International law and foreign states

• The AG consent mechanism in Sch 1 cl 7 directly imports international law concepts about flag state jurisdiction: consent is required only where the ship is registered under another country and that country has jurisdiction under international law over the alleged offence (Sch 1 cl 7(1)). The AG must take into account the views of the government of the flag state (Sch 1 cl 7(2)), creating an intersection between domestic prosecutorial discretion and international diplomatic considerations.

Regulatory regimes

• Regulation powers are split. The Governor may make regulations for the Act generally but not for the cooperative scheme (s 7(1)-(2)). The Governor‑General may make regulations to carry out the cooperative scheme (Sch 1 cl 12(1)), and regulations affecting inner adjacent areas require participating State Minister agreement (Sch 1 cl 12(2)). This results in a federated rule‑making structure where Commonwealth regulation covers the scheme, but State agreement is required to touch the inner State bands.
• The scheme does not apply to State and Commonwealth laws excluded by regulation (Sch 1 cl 9). This allows future regulatory interaction where specific State or Commonwealth statutes are placed outside the scheme.

Substantive State laws and extraterritoriality

• The scheme expressly does not apply to substantive criminal law provisions that are incapable of applying in an adjacent area or that are limited to the geographic boundaries of the State (Sch 1 cl 2(3)(a)-(b)). That requires cross‑checking State statutes to determine whether they are capable of extraterritorial application, and potentially amending them or clarifying applicability if a State intends them to operate offshore.

Subject‑matter overlap and federalism

• The cooperative model delegates substantive law to States, but uses Commonwealth law to apply those State laws in the outer adjacent area (Sch 1 cl 2(2)). Procedural law depends on the actor and forum (Sch 1 cl 3). This creates overlapping competence where the Commonwealth enacts the effect of State law in certain zones while preserving State command over inner adjacent areas. Subsequent Commonwealth or State laws that expressly override the Schedule’s procedural allocation can alter that balance (Sch 1 cl 3(4)).

In practice, applying the Act requires repeated cross‑reference to State criminal statutes to identify the substantive offence and penalty (s 5 classification), to the relevant procedural law (Sch 1 cl 3), to the intergovernmental agreement that allocates responsibility (Sch 1 cl 5-6), to flag state jurisdiction rules (Sch 1 cl 7), and to the boundary definitions contained in the Petroleum and Seas Acts (Sch 1 cl 13-15). The Act thus functions as a connector between multiple bodies of law rather than as a standalone penal code.

The text provided includes an explicit amendment note to Schedule 1 cl 15. The statutory record in the source is as follows.

• Substitution for baseline provision (Sch 1 cl 15): A note in the source states that the provision was "Substituted by No. 33 of 2023, s. 9, Applied: 27 Nov 2023". That indicates that the baseline rule for a State (other than Norfolk Island) and the baseline for Norfolk Island (mean low water for Norfolk Island) were altered by the 2023 amending Act No. 33, section 9, which took effect on 27 November 2023. The source contains that applied annotation adjacent to cl 15.
• Repeal of earlier Act (s 9): The Act repeals the Crimes (Offences at Sea) Act 1979 (s 9). That is a consequential legislative history item: the 1979 Act is removed and its replacement is this 1999 Act with Schedule 1 cooperative scheme.
• No other amendments are recorded in the provided text: beyond the explicit substitution note for cl 15, the text supplied contains no further amendment annotations, commencement proclamations or other historical notes.

Practical reading: the Schedule’s cl 15 substitution shows the Act has been updated to alter baseline definitions or their application. The absence of additional amendment notes in the supplied statutory text means users should consult the consolidated version of the Act and the legislative amendments database for any other modifications since the original enactment. The Act itself requires commencement by proclamation (s 2), which means staggered or partial commencements are possible and users should confirm which parts have been proclaimed.

Because the Act cross‑references other statutes (Seas and Submerged Lands Act 1973; Petroleum (Submerged Lands) Act 1967), amendments to those Acts or to Schedule 2 of the Petroleum Act will also affect the boundaries and operation of the adjacent areas defined here. The note in cl 15 demonstrates that such technical amendments have occurred and may recur.

The source document does not list judicial decisions or litigation history. The Act text and its Schedule contain no case names, judicial interpretations or referenced judgments. Therefore, there is no litigation history recorded within this source to summarise.

Implications for research

• Because the Act is procedural and intergovernmental in character, litigation is likely to arise in respect of: (a) whether a particular place falls within an inner or outer adjacent area (requiring technical boundary interpretation referencing the Seas and Submerged Lands Act 1973 and the Petroleum (Submerged Lands) Act 1967, Sch 1 cl 13-15); (b) whether a substantive State provision is capable of extraterritorial application (Sch 1 cl 2(3)); (c) the effect and enforceability of intergovernmental agreement allocations, including stays under Sch 1 cl 6; and (d) the operation of the Commonwealth Attorney‑General consent requirement for foreign‑flagged ship prosecutions (Sch 1 cl 7). None of those types of litigation appear in the provided text, but they are plausible friction points.
• The Schedule’s explicit primacy provisions (Sch 1 cl 3(3)-(4)) and the exclusion of ADJR Act application to certain State decisions (Sch 1 cl 3(5)) are likely subjects for challenge or litigious interpretation, yet no decisions are recited here.

Suggested next steps for locating litigation

• Search consolidated federal and State law reports for decisions mentioning the Crimes at Sea Act 1999 or the Crimes (Offences at Sea) Act 1979 to identify any judicial treatment, especially in relation to stays under Sch 1 cl 6, AG consent under Sch 1 cl 7, and the evidentiary presumption in Sch 1 cl 4.
• Check High Court, Federal Court and relevant State superior court decisions for disputes over jurisdictional allocation in the adjacent areas defined by the petroleum statutes and continental shelf definitions (Sch 1 cl 13-15).

Because the Act text itself contains no litigation record, practitioners must consult case law databases and consolidated legislation histories to compile the litigation history for this instrument.

This Act contains several features that can catch practitioners, agencies and businesses unprepared unless they read cross‑references and procedural consequences carefully.

1. Dual dependencies on State and Commonwealth law

   • Substantive offences are State law but their application in the outer adjacent area is by Commonwealth law (Sch 1 cl 2(1)-(2)). Practitioners must check both the State offence text and the Commonwealth enabling application, and confirm whether particular State provisions are "capable" of operating offshore (Sch 1 cl 2(3)(a)-(b)). Failure to verify capability may result in charging a provision that cannot lawfully operate in the adjacent area.

2. Procedural law follows the actor, not the substantive law

   • The law of criminal investigation, procedure and evidence is allocated to the actor and forum (Sch 1 cl 3(2)): Commonwealth law applies to Commonwealth authorities; State law applies to State authorities in their area; judicial proceedings are governed by the law of the jurisdiction where commenced (Sch 1 cl 3(2)(a)-(c)). This can produce divergent procedural protections and rules across otherwise identical substantive offences, complicating evidence collection, arrest powers, detention, and admissibility of evidence.

3. ADJR Act exclusion

   • Sch 1 cl 3(5) excludes the Administrative Decisions (Judicial Review) Act 1977 from applying to decisions under State law that affect investigations, procedures and acts by State authorities under Sch 1 cl 3(2)(b). Legal remedies under the ADJR Act will therefore be unavailable for those specific decisions; alternative avenues of review must be used.

4. Evidentiary presumption on locus

   • Sch 1 cl 4 presumes the act occurred in the adjacent area once the conduct is proved, absent contrary proof. While helpful for prosecution, this is rebuttable; defence counsel should plan to contest locus where feasible. Prosecutors may rely on the presumption to avoid expensive geographic proof, but must be ready for rebuttal evidence.

5. AG consent for foreign‑flagged ships

   • Sch 1 cl 7 requires written consent by the Commonwealth Attorney‑General before some prosecutions proceed. The AG must consider the flag state’s views (Sch 1 cl 7(2)). Crucially, the absence of consent does not prevent preliminary actions such as arrest and charging (Sch 1 cl 7(3)), but an ultimate AG decline will compel a permanent stay (Sch 1 cl 7(4)). Prosecutors should not assume charges on foreign ships will reach hearing without the AG’s clearance.

6. Intergovernmental agreement stay power

   • Sch 1 cl 6(1)-(2) provides that charges contrary to the intergovernmental agreement must not be brought and are subject to mandatory stay on application. This introduces a non‑judicial bilaterally negotiated boundary on prosecutorial action. Courts will not automatically police compliance; they will only stay proceedings on application under cl 6(2) (Sch 1 cl 6(3)(b)). Prosecutors must therefore coordinate with the intergovernmental allocation to avoid an application for stay.

7. Regulation‑making complexity

   • The Governor (state executive) may make regulations for the Act generally but not for the cooperative scheme (s 7(2)). The Governor‑General may make regulations for the scheme (Sch 1 cl 12(1)), but regulations affecting inner adjacent areas require participating State Minister agreement (Sch 1 cl 12(2)). This creates a two‑track rule‑making environment: check which executive is the proper regulator and whether State agreement is needed.

8. Boundary definitions are indirect and technical

   • Adjacent areas are defined by reference to Schedule 2 of the Petroleum (Submerged Lands) Act 1967 and the continental shelf and territorial sea regimes (Sch 1 cl 13-14). Practitioners must consult those Acts and any proclamations (e.g. the 4 February 1983 proclamation referenced for Queensland) to locate precise coordinates. Mis‑locating an incident could change which law and which authority apply.

9. Non‑application to Area A

   • Sch 1 cl 10 excludes Area A of the Australia‑Indonesia Zone of Cooperation. Do not assume the scheme covers all maritime spaces adjacent to a State; check for exclusions tied to international cooperative zones.

10. Commencement uncertainty

    • The Act commences on days to be proclaimed (s 2). Parts of the Act or scheme may not be in force; always verify which provisions have been proclaimed and on what dates.

11. Defence of proceedings and proof of consent document

    • An apparently genuine copy of a written AG consent is to be accepted in the absence of proof to the contrary (Sch 1 cl 7(5)). Parties should preserve originals and chain of custody for documents used to establish consent in court.

12. Classification depends on maximum penalty only

    • s 5 fixes classification for the cooperative scheme by reference purely to maximum penalty, not to State process labels. That may change how charges are presented and managed under the scheme, particularly for offences with ambiguous penalty ranges.

Each of these points follows from the text of the Act or Schedule 1 clauses cited. Failure to account for them risks procedural missteps, jurisdictional error, or premature expectations about prosecutorial outcomes.

Compliance under this Act is primarily an exercise in correct mapping: determine the place of the conduct, the identity of the actor (Commonwealth or State authority), any intergovernmental allocation that governs the area, whether the vessel is foreign‑flagged, and which statutes and regulations govern the substance and procedure. Recommended pragmatic steps and checklists follow, grounded in the Act.

For prosecutors and investigating agencies

1. Determine geographic classification

   • Establish whether the incident occurred in the State area, inner adjacent area or outer adjacent area, using the baselines and adjacent area definitions in Sch 1 cl 14-15 and cross‑referencing the Seas and Submerged Lands Act 1973 and the Petroleum (Submerged Lands) Act 1967 (Sch 1 cl 13-15). Use nautical charts, GPS coordinates, and any proclamations defining territorial sea limits or island‑specific baselines (Sch 1 cl 15 and cl 14(2)(c) references to specific proclamations).

2. Identify applicable substantive offence

   • Identify the State substantive criminal provision that creates the offence and confirm whether that provision is capable of applying extraterritorially in the adjacent area (Sch 1 cl 2(3)(a)-(b)). If the provision is geographically limited within the State, do not rely on it offshore without amendment or clear extraterritorial wording.

3. Classify the offence for procedure

   • Use s 5 to classify the offence by maximum penalty into summary, minor indictable or major indictable for cooperative scheme procedural purposes. That classification will influence whether committal or summary processes apply.

4. Check the intergovernmental allocation

   • Consult the intergovernmental agreement entered under Sch 1 cl 5 to determine which authority has responsibility for the relevant part of the adjacent area and whether responsibility is concurrent. Confirm that bringing a charge would not contravene the agreement (Sch 1 cl 6(1)-(2)). Ensure the Minister has published the agreement in the Gazette (s 6).

5. If the vessel is foreign‑flagged, seek AG consent where necessary

   • If the alleged offence was committed on or from a foreign ship registered overseas and that country has jurisdiction under international law, obtain the Commonwealth Attorney‑General’s written consent before proceeding to hearing or committal (Sch 1 cl 7(1)). Provide the AG with the flag state’s views where possible and anticipate diplomatic considerations (Sch 1 cl 7(2)). Be aware that preliminaries such as arrest and charge laying can proceed without consent, but that a refusal will yield a mandatory stay (Sch 1 cl 7(3)-(4)).

6. Observe procedural law allocation

   • If a Commonwealth authority is conducting the investigation, apply Commonwealth law to the investigation and related acts (Sch 1 cl 3(2)(a)). If a State authority is acting within its area of administrative responsibility, apply State procedural and investigative law (Sch 1 cl 3(2)(b)). For judicial proceedings, identify whether the proceeding is a Commonwealth or State judicial proceeding because different rules will govern (Sch 1 cl 3(2)(c)).

7. Preserve documentation of consent and intergovernmental communications

   • Secure written AG consent and keep copies; Sch 1 cl 7(5) states that an apparently genuine copy is to be accepted in proceedings absent proof to the contrary. Record communications with flag states and participating State Ministers, since those communications may be relevant to AG decision‑making or challenges under Sch 1 cl 6.

For defence counsel and accused persons

1. Challenge locus where appropriate

   • Use Sch 1 cl 4: the presumption in favour of locus is rebuttable. If the prosecution relies on the presumption that the act occurred in the adjacent area, assemble evidence that demonstrates otherwise.

2. Check AG consent status for foreign‑flagged matters

   • If the alleged conduct occurred on a foreign ship, request disclosure of any AG consideration and consent documentation early. A refusal will produce a permanent stay (Sch 1 cl 7(4)), so verifying whether consent was sought and granted is material to defence strategy.

3. Identify procedural regime that applied to investigative acts

   • Determine whether Commonwealth or State procedural law governed the investigative acts. If a State authority acted under State law, note that ADJR avenues may be excluded for certain decisions (Sch 1 cl 3(5)), and pursue other avenues such as State administrative law remedies or Charter/constitutional arguments where relevant.

For ship operators, owners and insurers

1. Classify ship status

   • Confirm whether a vessel is an Australian ship or a foreign ship under the definitions in Sch 1 cl 1. If registered overseas and an incident occurs, expect diplomatic and AG consent processes to be relevant (Sch 1 cl 7).

2. Record‑keeping and chain of custody

   • Maintain logs, manifests, crew lists and navigation data to rebut presumption of locus where necessary and to provide evidence in any investigative or prosecutorial process.

For regulators and policy drafters

1. Check regulation‑making competence

   • For matters touching the cooperative scheme, consult s 7 and Sch 1 cl 12 to identify whether regulations must be made by the Governor‑General and whether participating State Minister agreement is required for inner adjacent area effects.

2. Consider exclusions

   • If a State or Commonwealth statute should not be within the ambit of the cooperative scheme, use the Sch 1 cl 9 power (exclusion by regulation) to provide clarity.

Administrative and intergovernmental process

1. Ensure Gazette publication

   • The Minister must publish the intergovernmental agreement and amendments in the Gazette (s 6). Confirm publication has occurred and obtain the published instrument.

2. Allocate operational responsibility

   • Where an intergovernmental agreement prescribes concurrent or exclusive responsibility (Sch 1 cl 5(2)), ensure operational protocols, charging guidelines and evidence‑sharing arrangements are aligned to the agreed allocation to avoid charges that could be stayed under Sch 1 cl 6.

3. Training and standard operating procedures

   • Train investigators, prosecutors and judicial staff on the different procedural rules that may apply depending on the actor and forum (Sch 1 cl 3). Draft checklists addressing AG consent triggers, presumption issues (Sch 1 cl 4), and classification by penalty (s 5).

Verify commencement

• Check the proclamation details under s 2 to confirm which provisions have commenced. The Act’s mechanics require the Schedule to be in force for many operational rules to apply.

In all cases, compliance involves a combination of geographic verification (Sch 1 cl 13-15), legal mapping across State criminal provisions and procedural statutes (Sch 1 cl 2-3), and administrative coordination under the intergovernmental agreement (Sch 1 cl 5-6) and AG consent processes (Sch 1 cl 7).