From YPPedia
Information commands

The /vwho command will list any player-owned ships whose name matches the argument input exactly. The /vwho command also lists the crew and flag of the vessel's deed-holder.

Below this information, the current location status of the ship is listed. A ship is either "In port at <island name>" or "Last seen leaving <island name>." If it is in battle with another ship, "Battling with <ship name>" appears below the "Last seen leaving" line.

Following that, a list of players currently aboard the ship is given. Each player's name is linked to their info page.

/vwho <vessel name>