The Legend of Zelda: Phantom Hourglass/The Ship

Ship Parts
Scattered throughout the game are ship parts. These can be used to upgrade your ship. Go to the shipyard in Mercay Island to do so.

Ship parts increase the health of your ship. The extent to which they do so depends on how many parts from a specific set are currently equipped on your ship. The sets and their corresponding parts are listed below.

For each set, 1-3 parts gives no health benefit, 4-5 parts gives +1 heart, 6-7 parts give +2 hearts, and all 8 parts gives +3 hearts. A ship of all Golden parts has +4 hearts.