Ship captains often invite members of their clan or even the public to join them on their ships to gain serpent or hero points. To help you be an effective crew member here are the actions you can perform and points of interest on a ship. Be aware that these locations will vary on different ship types.

Ship Helm
The helm is the first room you will appear in on the ship. When you fly or goto your starting room will always be the helm.

The Capstan.
This is where the anchor is located. Ship weigh and ship drop are performed here. On a Man O'war this is e, s, d all e from the helm

Crow's nest
The crow's nest is located at the top of the main mast. From the nest your view of the ocean is greater so you will have more success casting harm's on enemy ships from here. You can also spy on enemies. The range of survey is also increased. On a Man O'War this is e, s, d, e, e, n, all u from the helm.

Main deck.
This is the upper area of the ship where the top row of guns are located.

Poop deck.
This is the deck where the helm and two stern guns are located.

Ship request <ship name>: To join a ship from another clan you must first ask permission. You will be notified once the captain has approved your request.

Ship goto <ship name>: If you are joining a ship that is in your clan you are able to go directly there from any LPK wilderness room.

Fly Ship <ship name>: To get to a ship not of your clan or a ship that is docked you will have to fly. If you die aboard this ship you will then be able to use the goto command once resurrected.

Ship repair: This will repair the room you are currently in. When heavily damaged it is a good idea to repair all destroyed rooms to critical. Once done, begin repairing critical rooms to medium and then to light. This could very well save an almost destroyed ship.

Ship pump: Perform this action below the main deck. Not all rooms will allow this action. Pumping will gradually lower the water level when the ship is damaged and taking on water.

Ship douse: Use this command when a room is on fire. Try to put out all the fires ASAP they will destroy rooms and spread very quickly.

Ship weigh: Raises the anchor

Ship drop: Drops the anchor

Ship spy <ship name>: The captain may ask you to spy on an enemy ship. This command will give you details on the target. For example you can see if a ship's hull is completely destroyed, it would be pointless to keep firing on this area so you can let the captain know where to focus fire.

Ship raise full: Raise the sails from any room on the mast. Deckhands cannot move the sails without instructions

Ship lower battle: Will lower the sails

Ship drag <direction>: When you have killed an MF you can help the captain by moving the corpses to below deck.

Do not AFK. This is especially important if you have a higher rank than the captain. If they die and return to the ship they will not be able to take command again. If you must, check with the captain if it could cause problems.