Humber Hull pics...2 years late!

[cjj216]

A couple of years ago I had captive bolts fitted to enable removable rear seat pods on our Ocean Pro.
After receiving some sound advice from the forum I promised to post info and pics on what lurked beneath the deck when we cut holes to fit the bolts.
Anyway, I got the pics but never posted them. [emoji107]
Just clearing my PC of old pics and thought - better late than never.
So here’s what we discovered:

Nugent was half correct when he said the underside of the deck is most likely not coated with anything. The sheet of ply to the rear of the boat beneath the seat pods was coated with resin. The sheet under the console running toward the bow was just bare ply! Why, I`ve no idea!? That said, it doesn`t seem to have affected the soundness of the deck. In case any owners have been wondering what’s below - There are no bulkheads, just 2 large solid stringers made of hardwood and encased in glassfibre running the full length of the boat creating three cavities. The outer 2 nearest the tubes were well sealed and bone dry. The middle cavity, as Ocean pro owners will know, connects the bow anchor locker to the sump at the transom and, with the bungs at each end removed, allows water to pass through from the bow locker to the rear sump and then out the boat via bilge pump or trunk.
All exactly as many of you described.
So..... thanks for the info - apologies I’m posting my findings 2 years late - and hopefully this info will help someone who, like me, has been wondering what’s going on beneath the deck of their Humber!

[nugent]

Yep not a lot in there for sure

[cjj216]

Nugent - you know boats.
Inside the hull of an Osprey I had years ago, there were several lateral bulkheads running between those stringers.
They were only 9mm ply in resin and matt with holes at the bottom of each one to allow any water through to the rear bung.
Once I seen inside the Humber hull, I wondered why you’d actually need them?
Do you think they add much structurally to the hull?
I do think the way Humber do it allows any water that enters the hull to exit quicker than being held up by bulkheads
The deck on mine was 25mm marine ply which I thought, screwed to those stringers,seems to give it all the structural integrity it needs.
Would be interesting to hear what you and others thought about this “no bulkhead” method of building and how other manufacturers construct theirs?

[xpertski]

Great to see these photos! In a couple of weeks I’ll be doing the underdeck cabling so it’s good to know what’s underneath. I won’t be able to fit the ducting on the outside of the stringers as my console is far forward so goes inside the stringers.

Very useful photos, thank you!