When purchasing a vessel, a member may send a number of crew on board for familiarization purposes before taking delivery, and therefore prior to the date when standard P&I cover would commence. This insurance covers the member's contractual liabilities to the crew members during their travel to the vessel, as well as on board prior to delivery. It would also cover the member's vicarious and contractual liabilities for damages caused by those crew members. Such cover would also be available to members whose crew remain on board after the sale of a vessel.