Boat-Wright

• This Proficiency is an "Any Use" Skill, meaning that anyone can use it with a 1-2/10% chance.
• The cost to unlock this skill is one Proficiency Point.
• The Attribute Modifier for this skill is Intelligence.

The boatwright, or boatbuilding proficiency, allows a character to construct all sorts of watercraft, up to a maximum size of 60 feet long (10 feet without unlocking the proficiency, and requires a check to succeed). Larger vessels require the skills of a character who's unlocked the boatwright proficiency, an area outside the province of underground exploration.
The time required to build a boat depends on it's size. As a general guide, the boat requires one week of construction time per foot of length. Two characters with boatwright proficiency cut this time in half. A maximum of one boatwright per five-foot length of the boat can work on the vessel simultaneously.
The basic boat includes the hull, masts, deck, and benches as required. Additional features such as a cabin or sealed hold add about a week apiece to the construction time. Characters without boatwright proficiency can aid the boatwright in construction, but it takes two such characters to equal the time savings that one additional skilled boatwright would provide.
At the end of construction, an optional proficiency check can be made. If the check succeeds, then the ship's maximum structure points and better AC (up to DM's discretion). If the check fails, then there is a severe flaw that must be fixed to be usable, adding another two weeks to the work time.