Seamoth

The Seamoth is a small, versatile one-person submersible capable of sustained high-speed travel over considerable distances. It boasts an omnidirectional propulsion system that allows for lateral and vertical movement that gradually increases to a maximum of 11.25 m/s in any single direction. The speed in any direction is independent of other directions and can be added together using vector addition. Thus, if going forward and upward the maximum speed is 15.91 m/s (11.25 * √2) and if going forward, upward, and sideways the maximum speed is 19.49 m/s (11.25 * √3).

As with the Cyclops and Prawn Suit, the Seamoth comes equipped with a locator beacon that produces an image on the HUD showing the distance of the vehicle from the player. It can be fitted with multiple upgrades and modifications that enhance performance and durability. These can be crafted in a Moonpool equipped with a Vehicle Upgrade Console.

Before the Seamoth can be constructed, its fragments must first be scanned. The player must scan three fragments before acquiring the recipe. Several can be found in the numerous Wrecks in the Grassy Plateaus surrounding Lifepod 5, and two in the Seamoth Bay of the Aurora.

Overview
The Seamoth is an electric vehicle and requires Energy from a Power Cell in order to function. It generates its own oxygen supply. When exiting while the vehicle is moving, the Seamoth will preserve its momentum and place the pilot behind it or in front of it. The pilot should be careful not to exit while quickly moving with dangerous creatures around, as the Seamoth may move away before the pilot can get back in, leaving them vulnerable to attack, or because the Seamoth might hit the player.

Controls
While the maximum speed of the Seamoth in any single direction is 11.25 m/s, strafing by holding multiple direction keys will increase its maximum speed to 15.9 m/s (2-directions) and 19.2 m/s (3-directions).

Hazards
The Seamoth has a hull integrity readout, which will decrease if the craft is attacked by hostile creatures, crashes into objects (including some plants), is exposed to temperatures greater than 70°C or exceeds its maximum crush depth. Reaper Leviathans are able to grab the Seamoth, dealing constant damage until it explodes. The player can not exit the Seamoth when this is happening. The player can repair this damage with the Repair Tool. A Hull Reinforcement Upgrade can reduce damage from terrain collisions by 50%. The Hull Reinforcement upgrade can stack up to 3 times, further reducing damage by 75% and 87.5%, respectively. Once the Seamoth's health reaches 0%, it will explode. The acidic brine in the Lost River deals periodic damage. If you get out of the in front of the Seamoth it can run you over doing 1/4 to 2/3 of your health in one hit. This can be avoided by coming to a full stop before exiting.

Installing Charged Power Cells
Outside of the Seamoth, there are panels that open. The power cell is replaced by accessing the installed unit under the jet engine. When selected, a menu will appear allowing the technician to choose a new power cell from inventory.

Upgrades and Customization
The Seamoth can be customized with the Vehicle Upgrade Console, which the player can use to craft upgrades and change the vehicle's name and color scheme. Upgrades can be installed and swapped via a panel on the left wing. Opening this panel reveals four slots. The Storage, Hull Reinforcement and Engine Efficiency modules are compatible with the Prawn Suit.

Data Bank Entry
Please note: The seamoth used to have an Easter egg in which it rarely says "I love it when you come inside me". This has since been removed for obvious reasons. The audio can be heard here: File:Seamothsecret.mp3
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Gallery

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Trivia

 * The old Seamoth Pressure Compensator (Depth Module) has the same crush depth of a Cyclops Ultra Hull Reinforcement Module. However, it is now unobtainable, having been replaced by the Depth Module, and cannot be upgraded. If a player has one, it is considered a separate item from the Pressure Compensator.
 * The Seamoth's AI used to occasionally say "I love it when you come inside me" instead of "Welcome aboard, Captain." This was a joke/sexual innuendo slipped in by the sounds producer, Simon Chylinski. After discussing the line with the dev team, Simon removed it as a lot of minors and families play Subnautica.
 * The Seamoth bears a striking resemblance to the real-world C-Explorer 3 submersible, produced by U-Boat Worx, although the Seamoth has a more streamlined appearance.
 * The Seamoth appears on the cover art for the Subnautica OST, along with the Reaper Leviathan.
 * According to Alterra Citizen Testimonials, as the name suggests it was designed for water, but Max Zoinkoff created a company to develop custom code so it could operate in space. In the ten years since he sold his company to Alterra, the Seamoth became one of the most widely used vehicles in the galaxy.
 * The Seamoth is never shown being used in space in-game.
 * The deepest biome that can be explored by the Seamoth is the Lost River.
 * The Seamoth Sonar System, despite being sound-based, does not attract attention if used, thus making it useful for spotting aggressive fauna, such as Reaper Leviathans, at a distance.

Bugs
PS undefined🇲🇴 The Seamoth has a chance to get stuck in the ground of the main beach of the Floating Island, if left in the shallow pool, upon return, the Seamoth will have clipped into the ground, usually with only the antenna visible, unable to be accessed. This can be fixed by picking up a Floater with the Propulsion Cannon near where the Seamoth is, causing it to attach itself to the Floater above ground. This can also be avoided by parking the Seamoth over open water instead of on the beach.