Cruisers Forum
 


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 03-07-2022, 16:24   #1
Registered User
 
rkarakai21's Avatar

Join Date: Nov 2019
Location: Sooke, BC
Boat: Tom Gilmer, Roughwater 33
Posts: 61
Heavy duty aluminum manhole, alternatives?

Just wondering if anybody has experience with these aluminum manhole covers. This is our aft engine access point. The original seal is shot which is it's own issue, and the handle on the lid has broken off prior to our ownership. I could clean this hatch up, maybe a bead blast or something, find the seal material, have a new handle welded on, but I'm curious if anybody else out there, probably on similar boats, smaller heavy displacement cruisers built in Taiwan has a hatch like this.

It has three turning dogs, with a shallow rectangular slot on top, the bottom of which is semi circular, in which fits a heavy steel T-Handle to lock them down. Problem is, these rectangular slots which were shallow to begin with have become somewhat rounded with age and use, and the opening device usually slips out when you are trying to dog down the hatch, usually causing more wear.

The t-bar that fits into the dogs has a rounded bottom piece about a half inch wide, that fits in the dog slot. Seems like a poor design from the start to use a shallow rounded bottom slot for heavy duty torqueing. But I digress.

My pictures show the relative size of the hatch ring, and I'm wondering if there are any more modern, heavy duty watertight alternatives that would work in this size, with a more positive locking mechanism. If this hatch leaks offshore, this is a potentially dangerous large source of water ingress for one thing, that could cause the bilge to fill up rapidly after taking a big greenie over the stern, furthermore, it leaks right ontop of our transmission and shaft coupling, which prior to our ownership it has turned from brand new to rusty in short order.





rkarakai21 is offline   Reply With Quote
Old 03-07-2022, 18:03   #3
Registered User

Join Date: Mar 2011
Location: Southport CT
Boat: Sabre 402
Posts: 2,260
Re: Heavy duty aluminum manhole, alternatives?

These guys seem to be familiar with the type of hatch plate you seek, though the dimensions may not match.
https://shop.hamiltonmarine.com/depa...CHP%7CHCO.html
They're not cheap, but they would seem to work better than the one you have.
psk125 is offline   Reply With Quote
Reply

Tags
aluminum

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Lucas Heavy Duty Oil Stabilizer Freerider Product or Service Reviews & Evaluations 12 20-09-2009 13:53
Can anyone suggest a good heavy duty adjustable riser for steel main hatch anglooff Construction, Maintenance & Refit 7 07-03-2009 15:57
I a stock Yanmar 55a Alternator "heavy-duty" enough to be changed to external reg? Northeaster Engines and Propulsion Systems 11 01-03-2009 14:28
Heavy Duty Zig Zag machine might be available bryanweaver Classifieds Archive 2 13-01-2008 19:23
Heavy Duty Bronze Stanchion Bases cburger Classifieds Archive 0 28-09-2007 09:48

Advertise Here


All times are GMT -7. The time now is 12:44.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.