It is true that the Rules no longer require, as O. 42 A, r. 14 of the repealed Rules formerly required, that in an Admiralty action in rem the writ of summons shall be served by the marshal or his officer, but this provides no indication that the writ may be served outside the jurisdiction; it may simply be unnecessary, in some cases, to invoke the aid of the marshal or his deputy to effect service. On behalf of the appellant it was submitted that O. 10, r. 5 would enable service in an action in rem to be effected by nailing or affixing a notice of writ, rather than the original writ, to the mast of the ship. Order 10, r. 5 provides that "Where the defendant is not within the Commonwealth, service of notice of a writ is deemed to be effective service of the writ". That rule, however, does not provide that the affixing of a notice of a writ to the mast of a ship shall be deemed to be an affixing of the original writ, and its general provisions do not detract from the force of the special provisions of O. 9, r. 11. It was further submitted that the general provisions of O. 10, relating to service outside the Commonwealth, apply to actions in rem. It was said, truly enough, that an action in rem is not simply an action against property - the owner of the property is indirectly impleaded in the action - and that once an appearance is entered the action proceeds as an action in personam, and that many of the provisions of the Rules, although generally expressed, apply to Admiralty actions. Therefore, it was said, the provisions of O. 10 apply equally to actions in rem and since, in the present case, the action was brought to recover damages in respect of a breach of contract made within the Commonwealth leave could properly be given under O. 10, r. 1 (1) (e) to serve the writ outside the Commonwealth. There is not the slightest indication that the general words of O. 10 are intended to obliterate the clear distinction between Admiralty actions that are in rem and those that are in personam, and the provisions of that Order cannot be interpreted as effecting a silent but revolutionary change in procedure. Their operation does not extend to Admiralty actions in rem.