Deck drains on 20's
20’ Fisherman that I’ve seen seem to have two different systems for draining the deck. One involves large holes in the deck piped to smaller openings in the bottom of the hull. These openings are usually (?) located right behind a wedge molded into the hull (venturi effect?).
The second type of system consists of small holes in the face of the engine well connected to slightly larger (?) openings in the face of the transom.
In terms of production dates/model year, was the type of deck drainage an owner option, or was it a design or a production changed. If it was the later, does anyone know when this change took place?
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