SubCargo Hull Repairs and Damage Control

Hull integrity is the shared health bar of every SubCargo crew. DeltaCore Studio’s Roblox alpha punishes ignored leaks: a single unrepaired gap lets water reach reactors, kills ballast efficiency, and invites Larry—the Blood Worm—to finish the job with 10–30 hull damage every 1–3 seconds while attached. Damage control is not glamorous, but it wins more deliveries than hero gunner clips. This guide explains welder, wrench, mop, and fire extinguisher roles, breach triage order, and habits that keep player-built subs floating through early access bugs.

Tools and what each one fixes

Welder — primary hull repair tool. Community timing puts a full wall repair at roughly eleven seconds from 0% to 100% integrity in current alpha. Aim at the breach prompt, hold interact, and do not release early. Buy at Underforge for about $230 or spawn/loot one from structures in Diving and Structures.

Wrench — services mechanical fixtures, wiring panels, and interior devices depending on sub layout. Use when leaks persist after welding because a linked valve or pump coupling failed—not every puddle is a hull gap.

Mop — removes standing water so you can see new cracks, reduces slip friction in reactor rooms, and buys seconds while welder cooldowns or player swaps happen. Mops do not replace welders; they reveal the next job.

Fire extinguisher — suppresses electrical or fuel fires before smoke blinds the bridge and before heat propagates into ammo stores. Pair with reactor discipline from Ballast and Systems.

Learn interaction bindings in Controls and stash duplicate tools near bridge and engine room so flex players do not marathon half the sub during crises.

Breach triage: what to fix first

When alarms fire, call the compartment name aloud and assign one repair lead. Default priority list:

1. Reactor and engine room breaches—power loss stops ballast pumps and turrets mid-fight.
2. Bridge-adjacent holes—pilots need visibility and chair access; flooding here ends navigation even if engineering survives.
3. Cargo bay leaks—contract cargo destroyed fails Cargo Delivery payouts even if you limp home alive.
4. Airlock integrity—exterior ops lock out if chambers fill unpredictably.
5. Peripheral storage—fix when higher tiers stable.

If Larry is attached outside, gunners apply Beat Larry DPS while interior welder continues—exterior chewing does not pause because you mopped the galley.

Standard repair loop

1. Identify — water spray, whistling audio, or hull UI tiles flashing red.
2. Isolate — close interior doors to choke flood spread; warn divers in airlock before sealing.
3. Drain delay — mop standing water only after welder starts or you confirm active breach location.
4. Weld — hold until 100%; partial fixes re-leak under alpha pressure simulation.
5. Verify — watch tile color, listen for spray stop, confirm reactor dry.
6. Report — pilot adjusts depth if temporary weight shift caused trim issues.

Run this loop in drills during Getting Started dock sessions so new players do not panic-learn under Larry timers.

Flooding versus ballast confusion

Crews often blame pumps when the real issue is a hidden breach aft. If interior puddles grow while pumps run, send someone with a welder before engineers rebuild tanks. Cross-read Ballast and Systems only after hull tiles read secure—otherwise you chase neutral values while water weight climbs.

Open hatches to the sea mimic breaches without needing Larry—enforce door checklist before undocking and after structure dives.

Fire response

Reactor overheats, mortar misfires, and wiring shorts start fires in alpha subs. Extinguish before welding nearby fuel lines. Assign a second player with mop to clear charred rooms so welder sightlines return. If smoke reaches bridge, pilot should hold position—not every fire needs emergency surfacing that beaches the sub on ceiling rock.

Crew roles for damage control

Primary welder — stays with breach until 100%.

Backup welder — parallel fix on separated floods after doors isolate sections.

Mop/flex — clears floors, swaps tools, relays compartment status.

Engineer — keeps pumps and power alive; never leaves reactor to weld unless solo desperate.

Pilot — stable heading, avoids new collisions that stack damage.

Gunner — only peels off when Larry threatens total hull loss—communicate before switching roles.

Preventive maintenance between contracts

At dock:

• Walk exterior camera or hull UI for yellow tiles; pre-weld chips before next vein.
• Restock extinguishers and spare welders from shop profits in Cargo Delivery.
• Test interior doors and airlock drain after diving ops.
• Split earnings to fund tool redundancy—one welder per two players minimum in alpha lobbies.

When repairs cannot keep pace

Abandon contract and retreat if:

• Reactor room hits ankle-deep despite continuous weld.
• Multiple compartments flood faster than two welders cycle.
• Larry attachment overlaps cascade breaches—you need dock, not pride.

Alpha bugs occasionally desync breach visuals—rebuild affected section or rejoin server, then note in Updates or community channels on Official Links.

Linking repairs to meta progression

Reliable damage control funds longer routes and structure loot. Weapon upgrades on the Tier List matter only if the hull survives to fire them. Treat repair skill as progression parallel to gunnery—crews with boring weld discipline finish more alpha nights than flashy divers who ignore interior spray warnings.

SubCargo is early access; tool timings and fire spread may change. Re-verify eleven-second welder baseline after patches and update crew drills accordingly.