Saved revision 6. Current page.Ship upgrades and captain skillsRefits permanently improve cargo space, sailing speed, durability or firepower. Shipwrights sell them, and captain levels unlock higher tiers. Sources (8)src/systems/fleet.jssrc/systems/naval/captainTree.jssrc/systems/naval/captainLedger.jssrc/systems/naval/shipFlag.jssrc/systems/naval/shipLivery.jssrc/systems/naval/deckFittings.jsbible/03-World/Naval-Refit.mdsrc/ui/captainTreeWindow.js