Operational and legal pitfalls arise directly from the Act’s short, procedural structure. These are practical risks and technical traps that owners, agents, Collectors and secured parties should note.
Written notices and the definition of home port: The Act defines "home port" as the port notified by the ship’s owner or agent as the ship’s home port in a written notice to a Collector at that port (s 3). Consequently there is no statutory "default" home port created by mere presence; an owner or agent must give a written notice to a Collector at a port for that port to count as home port for the purposes of payment under s 8(1)(a). Failure to provide the written notice risks uncertainty as to where levy under s 7(1) is payable, and may shift the payment obligation to alternative rules such as those in s 7(3) and s 8(3) for arrival‑triggered levy. The Act also allows owners or agents to specify another Collector by written notice before the day levy is payable (s 8(1)(b), s 8(2)(b)), so the timing of those notices is material: they must be given before the day levy is payable. Late or missing notices can change the applicable Collector.
Joint and several liability for agents and consignees: Section 6(2) makes the owner/master and agent/consignee jointly and separately liable. An agent who pays port charges on behalf of a ship therefore may be pursued for the full levy even where the owner disputes liability, unless the agent has contractual protections. Agents do have a statutory right to retain up to the amount paid from money received on account of the ship or belonging to the owner (s 11), but that retention may not be available if the agent has not actually received such funds.
Frequency cap and counting periods: Levy is not payable under the section more than four times in any 12 consecutive months (s 7(5)). Practically, counting "12 consecutive months" and determining whether particular levy events fall within that cap can be complex where vessels have irregular movements. The Act does not provide a methodology for counting the four occasions, so parties must reconstruct timing from the operative subsections that trigger levy.
Exceptions to arrival‑based levy: Section 7(4) lists specific circumstances when arrival at or being in port does not, by itself, make levy payable: bunkering and replenishment of supplies, crew changes, medical disembarkation, shelter, repairs or refitting. Those narrow exceptions mean that many routine port visits will still attract levy unless they fall squarely within those categories. Parties relying on these exceptions must ensure the port call fits the enumerated grounds.
Detention and impact on secured creditors: Customs officers may detain a ship until levy is paid (s 10(1)). While detained, the ship is immune from seizure under s 123 of the PPSA (s 10(2)). That creates a temporary priority in practice for levy collection over a PPSA enforcement seizure. Secured creditors should be aware that detention can interrupt their enforcement timetable, and that the Act does not specify how long detention may be maintained; there may be further procedural safeguards elsewhere, but none appear in this text.
Regulatory dependency for exemptions and remissions: The Act leaves exempt ships and refund or remission mechanisms to regulations (s 3; s 12(2)). That places significant operational power in the executive to define exemption classes and relief mechanisms, with the risk that parties cannot rely on statutory detail until regulations are made and published. The Act provides the regulatory mechanism but does not itself list exempt classes or refund criteria.
Payment methods and "as otherwise prescribed": Section 8(4) allows payment personally, by post or "as otherwise prescribed". The unspecified "as otherwise prescribed" phrase means the regulations may introduce electronic payment systems, delegated collection agents, or other methods that affect day‑to‑day compliance. Parties should look to regulations to confirm acceptable payment channels and any documentary requirements.
No penalties specified: The Act enables recovery and detention but does not specify interest, penalty rates, or criminal sanctions for failure to pay. Consequently, monetary consequences of default outside of recovery costs and detention impacts depend on court awards and any regulatory provisions that might be made.
Delegation of appointment power: The Minister may delegate appointment powers to an officer of the Department (s 5(2)). That allows appointments of authorised persons to be made administratively below ministerial level, which may accelerate the appointment process but also disperses decision‑making about who acts as Collector.
Record keeping, proof and dispute: Because recovery is by summary proceedings (s 9) and written notices control where payments should be made (s 8), parties must keep documentary evidence of notices, payments, and the facts which affect timing of levy (for instance periods when a ship was exempt under regulations, if any refunds/remissions are later claimed). The Act itself provides no record‑keeping rules, so procedural disputes about when levy was payable will turn on documentary proof.
Taken together these "gotchas" reveal that the Act fixes a narrow collection regime that depends heavily on written notices, regulatory definition of exemptions and remissions, and the operational exercise of detention and recovery powers to secure payment.