The clarity of the
rule? As I read it, the BASES must be vertical for 2" and within a certain distance of the "working deck". The stanchions or tubes leading from them can at most be angled 10º. That is not the same as saying the pulpits must be within the
deck plan.
The idea is to keep crew on board the
boat. People sit and lean on pulpits while working at the bow. An extreme overhanging pulpit would put a crew, depending upon it for support, halfway off the
boat. The bow dives in (especially with his or her weight up there) and the
water hits them on the boat's way down,
washing them up and off the foredeck. Hope they're hooked on. With the stanchions and pulpit all within or close to the
deck plan, if the bow dives in, the wave goes up outside of where the crew is.
Water might come over the bow if the boat submarines into a wave, or a crest comes down on it, but the crew then gets washed aft, not up and off the boat. I've been kneeling forward, working
jib hanks, when the bow has plowed into a wave with green water over my waist. I was glad to be working on deck and not out over the water.