Tenders in Marauder's Sea: unarmed 1,200 HP repair ships that heal friendly warships and marauders in a 30-tile bubble. Other Tenders only heal at 15%.
No guns on the rail. The Tender is a floating carpenter's shop — thick oak, two black sails, and a crew that patches other people's fights. Captains who mock her learn what a leaking galleon is worth when the Port is twenty minutes astern.
Click water to place, same as a Warship. Keep her with the fighting hulls, not on the beach. If your ships are hugging a Port, she is wasted gold — Port heal already covers that. Far from harbor, she is the difference between a ranked galleon coming home and a rumor on the bottom.
Park two Tenders in each other's circles and they will slowly patch one another at 15% — useful if both are leaking, not a substitute for Port. They will not sit still to heal each other when they are badly hurt; they still steam home.
Back to the building list or pick a map like X Marks the Spot and play this mobile strategy game in the browser.