Hulls are researched in the Naval Lab. The following table details the requirements for unlocking each hull. The Gunboat hull is the default hull, and is unlocked when the game is first joined.
|Skirmisher||7,693||6,154||5,770||6,923||6m||Naval Lab 1|
|Longship||40,602||32,482||30,451||36,542||33m||Naval Lab 2|
|Marauder||214,301||171,441||160,726||192,871||5h 37m||Naval Lab 4|
|Predator Submarine||642,903||514,323||411,458||822,916||14h 03m||Naval Lab 5|
|Battle Barge||996,753||797,402||747,565||987,078||1d 4h 07m||Naval Lab 6|
|Leviathan||4,176,421||3,341,137||3,132,316||3,758,779||5d 20h 37m||Naval Lab 8,
|Stalker Submarine||6,505,487||5,204,389||4,879,115||5,854,938||8d 2h 26m||Level 9 Naval Lab,
|Seawolf||9,594,896||7,675,917||7,196,172||8,635,406||8d 18h 56m||Navel Lab 9,
|15,608,090||12,486,472||11,706,068||14,047,281||11d 17h 15m||Naval Lab 10,
Battle Barge, Leviathan
Naval lab 10, Floating Fortress
|Battle Cruiser||N/A||N/A||N/A||N/A||N/A||Event winner||N/A|
Each ship rank grants that ship a percent increase of firing rate and turning speed. The amount of experence points needed for a ship to advance from one rank to the next is dependent on the type of ship.
|Bonus||Fire Rate||Turn Rate|
|Ship||First Class||Second Class||Thrid Class||Fouth Class||Elite Class|
Hulls, along with Armor are the two products researched by the Naval Lab. There are nine different hulls currently available to research, with each one progressively more capable and slower than the last, excluding the Seawolf and Predator Submarine which serve as niche or speciality ships.
If a fleet is damaged you can repair it in the dock.
Mercenary Fleets are gained by your friends on Facebook who also play the game and have chosen to send you a free gift. The option to send free gifts tab can be found at the top left of the game console. You can deploy one Mercenary Fleet every 12 hours and it lasts for 12 hours.
Mercenary Fleets utilize only the technology and hulls you have researched (Three ships of your highest hull* and 2 ships of you second highest*).
*Subs and Seawolfs are excluded from Mercenery fleets