The first of such suggested requirements speaks to the frequency of use, namely that the vessel must spend “a reasonably significant part of its operative life in such movement” and “significant periods of time moving across the seas from one contracting site to another”: The Von Rocks at pp 206–208 (see [58] and [61] above). As I indicated above at [81], I respectfully disagree, and I note that the defendant has not adduced any other authority in support of this proposition; on the other hand, I am not alone in my disagreement with The Von Rocks on this particular point: Perks at [43]. In my judgment, the extent of the actual movement of a vessel should not have a bearing on the finding that the vessel was actually being used in navigation. A vessel may undertake very few voyages for a multitude of reasons, for instance, if the commercial arrangements are such that the vessel is not required to transport cargo or persons regularly. One can immediately think of a number of examples, such as a cargo ship being laid-up at a shipyard for years. One could think of another example of a dumb barge moored at an offshore land reclamation site and used for an extended period of time as an equipment storage pontoon without being moved. In these examples, the infrequency, or even complete absence of, actual navigation (ie, “ordered movement across the water”) does not and cannot change the fact that the vessel can, in actual fact, be navigated across the water (even if infrequently) and therefore, is clearly navigable. That element of navigability, in my view, would be sufficient to attract and justify the proper invocation of the court’s admiralty jurisdiction against the vessel concerned. The infrequency of actual movement across the water should not impact the court’s assessment of the vessel’s navigability, ie, whether the vessel is capable of being used in navigation.