Upgrades

Ship Upgrades

Permanent modules bolt into a ship’s upgrade slots to tune it for a role. Most come in grades — the same upgrade, stronger the rarer it is — shown here by colour. Source-named upgrades (admiralty, events, raider drops) and ship-knowledge books are included; the retired port-bonus variants are not.

Grade: BasicMasterNavyElite — values are the in-game modifiers; a blank cell means the upgrade does not touch that stat.

Plating

UpgradeGradeAccelerationDeceleration
Copper PlatingBasic+3%−3%
Master+6%−6%
Navy+9%−9%

Rudder

UpgradeGradeRudder HPShip turn rate
Optimized RudderBasic+1.8%
Master+3%
Navy+4.5%
Reinforced RudderBasic+25%
Master+50%
Navy+75%

Ballast

UpgradeGradeHeel
Ballast RelayBasic−5.25%
Master−8.75%
Navy−13.5%

Sails

UpgradeGradeSail HPMax speed
Light SailsBasic−5%+0.25%
Navy−5%+1%
Light Sails Master−5%+0.5%
Reinforced SailsBasic+5.5%
Master+9.5%
Navy+14.5%

Rigging

UpgradeGradeStaysails powerSquare sails power
Square Sail RefitBasic−2.5%+2.5%
Master−3%+3%
Navy−3.5%+3.5%
St. Georgeu2019s Stay Sail RefitBasic+20%−5%
Stay Sail RefitBasic+7.5%−1.875%
Master+10%−2.5%
Navy+12.5%−3.125%

Masts

UpgradeGradeMasts durability
Reinforced MastsBasic+10.5%
Master+17.5%
Navy+25%

Frame refits

UpgradeGradeArmor HPStructure HPCannon penetrationArmor thickness
Diagonal RidersBasic+4%+7%
Master+5%+11.5%
Navy+6%+18.25%
Iron KneesBasic+7%+5%
Master+11.5%+6%
Navy+18.25%+8%
Raider Diagonal RidersBasic+6%+18.25%+2.5–4.5%
Raider Iron KneesBasic+18.25%+8%

Planking refits

UpgradeGradeArmor HPSplinter resistanceMax speedArmor thicknessStructure HPShip turn rateStructure repairLeak repair speedBailingHeel
Fisher PlankingBasic+2.5%+15%
Elite+3.5%+20%+15%−17.5%
Hard Wood PlankingBasic+5%
Master+6%
Navy+8%+3.5%
Light PlankingBasic+1%
Master+2%
Navy+3%
Raider Hard Wood PlankingBasic+8%+3.5%+4.5%
Raider Light PlankingBasic+9%+5–13%+2%+100+25%
Raider Soft Wood PlankingBasic+9%+5–13%+0.5%
Soft Wood PlankingBasic+4%+3–8%
Master+6%+4–11%
Navy+9%+5–13%

Gunnery

UpgradeGradeCannon reload timeMarines percentageMarines levelMax speedSail HPCrew
British GunnersBasic−4.3%
Elite−4.5%
British SailorsBasic+0.875%
Elite+1%
GunnersBasic−1%
Master−2.5%
Navy−4%
MarinesBasic+2.5–10%+1
Master+5–12.5%+1
Navy+10–17.5%+1
Raider GunnersBasic−4%+6%
Raider SailorsBasic+0.5%+14.5%
SailorsBasic+0.25%
Master+0.5%
Navy+0.75%
Tortuga MarinesBasic+13.75–21.25%+1
Elite+17.5–25%+1

Ammunition

UpgradeGradeFirefightingSplinter resistance
Fire BucketsBasic+12%
Master+20%
Navy+30%
Splinter NetsBasic+5–13%
Master+7.5–20%
Navy+10–27%

Gun sights

UpgradeGradeCannon horizontal dispersionCannon vertical dispersion
Gun SightsBasic−2%−2.5%
Master−2.5%−4.25%
Navy−3.5%−6.75%

Gun carriages

UpgradeGradeCannon Traverse SpeedCannon traverse upCannon traverse down
Gun TacklesBasic+5.25%+5%+5%
Master+8.75%+6%+6%
Navy+13.5%+7%+7%

Boarding weapons

UpgradeGradeMelee defenceDisengage timeMelee attack
CutlassesBasic+3.75%
Master+6.25%
Navy+9.5%
PikesBasic+3.75%−1
Master+6.25%−1
Navy+9.5%−1

Firearms

UpgradeGradeCrew musket %
MusketsBasic+3%
Master+4%
Navy+6.5%

Repairs & carpenters

UpgradeGradeArmor repairCannon reload timeCrew repair
CarpentersBasic+2.5%
Master+4%
Navy+6%
Northern CarpentersBasic+7%
Elite+8%
Powder MonkeysBasic−1%
Master−2.5%
Navy−4%
Surgeon's MatesBasic+4.5%
Master+7.5%
Navy+11.5%
Tortuga Powder MonkeysBasic−4.3%
Elite−4.5%
Tortuga Surgeon's MatesBasic+13%
Elite+15%

Crew quarters

UpgradeGradeCrew
HammocksBasic+2.5%
Master+4%
Navy+6%

Rations

UpgradeGradeMoraleCannon reload timeSplinter resistanceCrew transfer per second
Exquisite rationBasic+3%+5
Rum RationsBasic+5−1%+1–3%
Master+8−1%+2–5%
Navy+10−1.5%+3–8%

Toolboxes

UpgradeGradeRepair timeLeak repair speed
ToolboxBasic−5.25–6.75%+6%
Master−8.75–11.25%+10%
Navy−13.5–17.25%+15.5%

Books

UpgradeSail HPCannon damageSail repairCannon horizontal dispersionCannon vertical dispersionCannon penetrationHeelAccelerationArmor repairMax speedCannon reload timeArmor thicknessCannon crewShip turn rateArmor HPYard power
Treatise on Aiming−0.5%−1%
Treatise on Gun Damage+1.25%
Treatise on Gun Reloading−1%
Treatise on Gun Service−2%
Treatise on Heeling−5%
Treatise on Hull Protection+2%
Treatise on Hull Reinforcing+0.75%
Treatise on Hull Repair+1.25%
Treatise on Momentum+1%
Treatise on Penetration+1.25%
Treatise on Rudder+1%
Treatise on Sail Reinforcing+1.25%
Treatise on Sail Repair+1.25%
Treatise on Speed+0.125%
Treatise on Yards+1.25%