Sampan
Slab

A sampan is a Chinese flat bottom row boat. Typically used in rivers and near coast, or as transportation from a larger ship when a deep water port is not available. I believe the Han dynasty used them for navel combat, but now days they are used primarily as fishing boats.
Crew: 9 medium creatures, or 5 large creatures
Cargo: .25 tons
Travel Pace: 3 miles per hour (24 miles per day)
STR 11 (0); DEX 8 (-1); CON 11 (0); INT 0; WIS 0; CHA 0
Damage Immunities: poison, psychic
Condition Immunities: blinded, charmed, deafened, exhaustion, frightened, incapacitated, paralyzed, petrified, poisoned, prone, stunned, unconscious
Hull: AC: 15 HP: 50 (damage threshold 10)
Control: Rear Rudder AC: 15 HP: 25 (damage threshold 10)
If the rear rudder is destroyed a creature can no long give the ship adv on Dex saves.
Movement: Oars (8) AC: 15 HP: 25 Speed: 20ft
For every 2 oars destroyed the speed drops by 5ft.