From YPPedia

Merchant brig
Crew
Max crew	20
Max swabbies	4
Hold
Mass (kilograms)	90,000
Volume (liters)	135,000
Stations
Navigation	1
Sailing	6
Carpentry	9
Bilging	6
Gunnery	2
Battle Nav
Move tokens per turn	3
Cannon size	medium
Cannons aboard	8
Cannon shots per move	1 per side
Max Damage: (SF) / (Sink)
Small cannon balls	12 / 20
Medium cannon balls	8 / 13.33
Large cannon balls	6 / 10
Blockade
Influence diameter	4
Min crew	7
Swabbie Ship Transport
Max Swabbies	8
Cost Per League	80 PoE
Construction Costs
Doubloons	40
Basic Labor	400
Skilled Labor	150
Expert Labor	50
Wood	400
Iron	125
Sail cloth	200
Tan cloth	N/A
Lacquer	N/A

A merchant brig is a type of ship.

Rooms and Furnishings

Total paint required for a merchant brig: 182 units

Merchant brig
Aft Hold Floor plan	Paint: This deck cannot be painted Special items: 1 booty chest 1 drinking game (NB. Older generation of merchant brigs only) Props: Barrel Broken barrel Bunk (x5) Broken square table (brawl table) (NB. Older generations only, newer ones have a Bar segment (middle) instead) Crate o'hemp Pyramid of barrels Crate o'limes (x2) Plain dresser Posters Cannonballs Sink Small painting (x2) Upright rum barrel (x2) Wardrobe
Cabin Floor plan	Paint: Trim: 11 units Special items: 1 booty chest 1 navigation table Props: Bag Bird cage Chest Crate o'limes Fancy bed Fancy dresser Ship in a bottle Sink Small painting
Crow's Nest Aft Floor plan	Paint: Railing: 2 units Special items: This deck has no special items. Props: This deck has no props.
Crow's Nest Main Floor plan	Paint: Sideboard: 2 units Railing: 2 units Special items: This deck has no special items. Props: This deck has no props.
Main Deck Floor plan