I am starting to put together a parts list for the exhaust extension, which will take the main engine exhaust up the mast and have it exit clear of the sail and other rigging. Here's some of my "cocktail napkin engineering" on that concept:
The next round of work on the rig will also include finishing up the down riggers and support pole connections. We got a little head start on laying these out and the geometry and clearances all look good so far. In the orientation shown below, the fore and aft hinge plates would be welded to the side-shell of the hull- the main down rigger pole hinge just aft of the wheelhouse and the fwd support strut hinge just ahead of the wheelhouse. According to the measurement below, it looks like we'll be able to board through the side gate and the stbd wheelhouse door with plenty of head room when the poles are stowed in the up position.
Also, I've been looking for a source for nice pre-made heavy duty bolt on pipe collars/brackets(?) in stainless for standard sch 40/80 pipe. These would be handy for attaching some of the cross bracing structure on the rig, the exact location of which can't really be finalized until the mast and down riggers are actaully installed on the boat. I've seen them on Nordhaven rigs and other fancy trawlers spars. We could fabricate these if necessary, but its quite a bit of work to get them right for a structural application. If anyone has any leads on these, please let me know.