I've never had to mess with my portholes so wouldn't be much help there. I'm wondering if you could go in from the cabinet door above the toilet. have you explored that option?
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Bob, I agree - it just doesn't look right with one portlight on one side. That said, I also don't really want an ugly, non-colored matched 6" deck plate in the beautiful fiberglass head module. I'm leaning toward glassing it over and creating a "faux" portlight by bonding the outer stainless portlight frame and an elliptical piece of smoked acrylic to the hull side with epoxy. Eliminates any chance of leaks and maintains the aesthetics of the exterior and head. There's too little clearance between the side of the deck and the fiberglass head module/liner. Below is a photo I took with a borescope fed through the ceiling light in the head. To the right is the plastic "tunnel" between the portlight inside the head and the inner surface of the deck's vertical side. To the left is the concealed portlight that few owners seem to be aware of. Its a portlight to no where!If it were me I'd entertain only solutions that allowed me to retain that porthole. That said, I'm in a covered slip, so water ingress is probably less of a possibility for me. I do like to open that porthole from time to time, if for no other reason, than to share the "richness" of my day with neighbors. Glassing over it feels like a leg amputation to fix a stubbed toe.
There's no room for the concealed/hidden portlight to open more than an inch even if you could access it from inside the boat. Strangest thing I've ever seem on a boat!
Fuel transfer valve system is going in next week (located to the left of battery switches in locker under cockpit wet bar). A 10' section of rub rail that was badly damaged by PO is also being replaced along with the installation of an N2K fuel flow sensor for the generator. This will conclude a 7 month refit. Once this is wrapped up we're getting the boat detailed inside and out and I'm doing a complete electronics refit. myself (I'm an electrical engineer). Also planning interior upgrades which will include new planked "faux" teak flooring and new mattress for forward berth.
We're planning to do 200 mile trips to the FL keys each year and wanted get all deferred maintenance items from the PO caught up so we can enjoy the boat without too many break downs. Also wanted to make an old boat look somewhat new again. Will share more photos as things come together.
You won't believe it when you see. The GM at our marine is former Marinemax service manager who has seen it all but not this one. It's hard to believe it was done for any other reason than exterior aesthetics and symmetry. The portlight holes were likely cut after the deck came out of the mold - holes are not typically molded in. The older 330 Sundancers were essentially the same boat and had two portlights on both sides, farther apart, with one in the head and one over the galley on the port side.I thought the concealed port light was behind the cabinet in the galley. Now you have me curious. I'll have to check that out next time I'm at the boat.
Bob, do you boat on lakes or SF bay? I've spent some time on SF bay and it has some wicked currents.
By the way Bob, the information about the Garmin fuel flow sensors is very helpful - thank you. I was initially thinking of going with SIMRAD N2K fuel sensors for both main engines but ultimately decided to first see how well the fuel consumption data off the ECM serves my needs. I've read articles that indicated Floscan is the "gold standard" of fuel flow measurement accuracy but after reading lots of posts I suspect that for most boaters the difference in accuracy between ECM fuel injector consumption and Floscan sensors is not big enough to justify the extra cost (a 2-3 gallons on a 100 gallon tank?) . I would rather keep a 1/3 reserve in my tank for all distance cruising, adding bladders if needed to extend range, than to trust the accuracy of any fuel flow measurement system enough to go below this reserve level. Mother nature has a way of increasing fuel consumption on long trips and in my opinion there's really no safe substitute for reserve fuel capacity.I was also looking at KUS here in FL. They have N2K gauges and magnetic reed switch senders. Not as reliable as your ultrasonic senders though. I will check out Gobius. May I ask the make and model of the small chart plotter bottom left (to look up its dimensions)? This looks similar in size to my NSSevo2 7" and hoping it can fit in the same location below my NSSevo3 12". This would free up the area under the switch panel for future electronics goodies!
Here's some food for thought on your electronics refit;
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I have since replaced the tachs with digital units, and the Maretron display with a Garmin. Next up is to replace that fugly chain-counter display with a glass helm version.