Cabin Fever/Quick guide

Setting sail

 * Travel to Port Phasmatys (Anyone can charter a ship there).
 * Talk to Bill in the inn.
 * Run to the dock, board the eastern-most ship.
 * Talk to Bill.

Sabotage

 * Open the repair locker, take 4 ropes.
 * Open the gun locker, take 1 fuse.
 * Take the tinderbox spawn
 * Climb the ladder, then climb the net next to the mast.
 * Use rope on the sail.
 * Use the fuse on their powder barrel.
 * Light the fuse.
 * Climb their mast and use a rope on the sail.
 * Talk to Bill.

Fixing the leaks

 * Descend the ladder.
 * Take from the repair locker:
 * 6 planks.
 * A hammer
 * 30 tacks.
 * 3 swamp paste.
 * Repair the leaky holes and waterproof them.
 * Talk to Bill.

Pirate plunder

 * Swing back over to the enemy ship.
 * Climb down their ladder.
 * Gather 10 plunder:
 * Plunder their chest,
 * Ransack their barrel,
 * Loot their crate,
 * Hop worlds to collect more Plunder quickly.
 * Swing across with the plunder and deposit it in the chest on the lower deck.
 * Talk to Bill.

Cannon

 * Search the gun locker, take a cannon barrel.
 * Repair the broken cannon on the top deck.
 * Talk to Bill.
 * Search the gun locker, take a ramrod, a few fuses, and some cannon canisters.
 * Take some powder from the barrel next to the cannon.
 * Use gunpowder on the cannon.
 * Then the ramrod.
 * Then the canister.
 * Then a fuse.
 * Fire the cannon!
 * Use the ramrod on the cannon again to clean it.
 * Repeat until 3 pirates die (OR until you run out of cannon canisters in your inventory, and when you try to take more it will say "you do not need a canister round right now" move on to the next step: Talk to Bill).
 * Talk to Bill
 * Search the gun locker, take several cannon balls, fuses and cannon barrels.
 * Fire the cannon with cannonballs until you put three holes in the enemy's ship. This is done with the same sequence above except instead of a canister, a cannonball is used instead - you will likely have to fire it more than three times and possibly repair it multiple times.
 * Quest complete!