Your sub carries two weapons: a main gun in the turret on Left click, and torpedoes on F.
The main gun
The gun fires a steady stream of rounds at whatever you aim at. Every ship starts with the AIR GUN gun. New guns are unlocked one after another: you buy the next gun in the line once you own the one before it, and the newest gun you own is the one fitted.
| # | Gun | Damage | Rounds/s | Damage per second | Range | Ship tier | Price |
|---|---|---|---|---|---|---|---|
| 1 | Air gun | 12 | 4 | 48 | 320 studs | 1 | free |
| 2 | Bolt cannon | 18 | 4 | 72 | 360 studs | 1 | 600 cr |
| 3 | Twin cannon | 20 | 6 | 120 | 380 studs | 1 | 1,800 cr |
| 4 | Rail lance | 62 | 2.5 | 155 | 520 studs | 2 | 5,000 cr |
| 5 | Flak battery | 46 | 4.5 | 207 | 440 studs | 2 | 9,000 cr |
| 6 | Arc cutter | 70 | 4 | 280 | 480 studs | 3 | 16,000 cr |
The ship tier caps which guns a ship can carry. The Otter is a tier-1 ship.
Fire control
Fire control raises the damage of every gun you own: +10% per level. A ship can take 5 levels per ship tier, so the Otter goes up to level 5. Guns and fire control belong to you, not to one ship: a new hull keeps them.
Fire control levels and prices
| Fire control level | Gun damage | Price of the next level | Ship tier needed |
|---|---|---|---|
| 1 | +0% | 150 cr | 1 |
| 2 | +10% | 450 cr | 1 |
| 3 | +20% | 870 cr | 1 |
| 4 | +30% | 1,380 cr | 1 |
| 5 | +40% | 1,970 cr | 1 |
| 6 | +50% | 2,640 cr | 2 |
| 7 | +60% | 3,370 cr | 2 |
| 8 | +70% | 4,180 cr | 2 |
| 9 | +80% | 5,050 cr | 2 |
| 10 | +90% | 5,970 cr | 2 |
| 11 | +100% | 6,960 cr | 3 |
| 12 | +110% | 7,990 cr | 3 |
| 13 | +120% | 9,090 cr | 3 |
| 14 | +130% | 10,230 cr | 3 |
| 15 | +140% | — | 3 |
Torpedoes
The torpedo is the heavy weapon. It goes where you aim and turns a little toward your aim point on the way. It explodes next to its target and hurts everything inside the blast radius.
| Damage | 260 |
| Blast radius | 26 studs |
| Speed | 170 studs/s |
| Range | 900 studs |
| Reload | 2.2 s |
| Homing turn | 0.6 rad/s |
A hit on a submarine can also damage a compartment, start a fire or breach the hull — see Crew and compartments.
Against leviathans
Both the gun and torpedoes hurt the Thresher and the Kraken. When their health runs low they swim away.
- About 5 torpedo hits drive off a Thresher.
- About 8 drive off a Kraken. If it is already holding your sub, 2 torpedo hits at point-blank range make it let go.
PvP
You can only switch PvP on or off in port, with the switch above the DIVE button. Your weapons hurt another player only when both of you have PvP on. While yours is off, other players cannot touch you.
Rewards
Hits and kills earn XP, credits and reputation. The higher your reputation, the bigger your credit bonus.
| For | XP | Credits | Reputation |
|---|---|---|---|
| A torpedo hit | 10 | 5 | 1 |
| A kill | 120 | 80 | 15 |