Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 12-02-2010, 09:17   #16
Registered User

Join Date: Jan 2009
Location: The Maritimes
Boat: 1980 CheoyLee35
Posts: 182
Thanks very much for the info! I'll do some further investigation to find a local supplier. It sounds like you have one heck of an interesting project underway. Best of luck!
Cheers, Shoalcove

Shoalcove is offline   Reply With Quote
Old 13-02-2010, 08:20   #17
Registered User
lorenzo b's Avatar

Join Date: May 2009
Location: Panama
Boat: Steel trawler 63' Eileen Farrell
Posts: 961
sound insulation

The real question is who's paying for this. I have a large engine room, 15 x 10 x 7, and most sound proofing systems were far too expensive. I used 1 1/2 inch styrofoam panel, about $12, layered with 3/8 ply on top and it works fine.

lorenzo b is offline   Reply With Quote
Old 13-02-2010, 08:54   #18
Senior Cruiser
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,949
Sound insulation is a very complicated business, however there are materials that are designed to do the job. Soundown is one of the companies that specializes in sound insulation. Yes it is expensive, but materials designed for the job do a much better job.

Airsep has equipment to stop the splashing of the generator exhaust and significantly quiets the exhaust.

You need to think of sound absorbing materials as well as sound blocking measures and sound isolating (engine mounts, floating floors, etc.) in order to do an adequate job. Hiring a good engineer with experience in these matters would probably be worthwhile.

Then you have to think of ventilation of the engine room.

Something you may be able to do is visit a high quality yacht of recent vintage and check out how they have insulated and ventilated the engine room. Pay particular attention to the isolation techniques they use as well.

This is not an easy task.
DeepFrz is online now   Reply With Quote
Old 13-02-2010, 23:57   #19
Registered User
Laidback's Avatar

Join Date: Jun 2007
Posts: 853
Originally Posted by Chief Engineer View Post
Before you go into all the expense of insulation...check out the price of a smaller genset.....

On the vessel in my avatar we have two Perkins Gensets....being an ex-RN vessel we are used to the sound.

I have seen "lead curtains" hung around gensets on some mega-yachts.

1942? There may be a lot of Hazardous insulation in there now....proper removal would be very expensive......
The Suggestion made by the Chief needs considering for 2 reasons :- The Chinese engine producing 30KVA from a generator maybe over kill. But, the weight of the generator alone will probably touch half a ton!
Suggest have a sit down and calculate the necessary electrical requirements of the boat.
Laidback is offline   Reply With Quote
Old 14-02-2010, 04:57   #20
Registered User
lorenzo b's Avatar

Join Date: May 2009
Location: Panama
Boat: Steel trawler 63' Eileen Farrell
Posts: 961
In my experience with a leaky cabin of about 7000 cu ft of living space you will nee the 30k only for A/C , at least a 5 ton unit, or electric heat. the 8K unit should be fine for your batteries.
If you find you still have old insulation onboard that contains " A ",never use the word on the advise of my lawyer, you can consider wrapping it and painting it to seal it. It only causes problems when airborne. Most likely it's already been removed.
lorenzo b is offline   Reply With Quote
Old 06-08-2010, 14:37   #21
Registered User

Join Date: Jan 2006
Location: North Carolina
Boat: 44 footer
Posts: 924
Just as an update...

Ended up using 2 layers of lead loaded Sounddown foam inside the forward bulkhead (backs up to the master stateroom)

We made that bulkhead out of 3 layers of 3/4 marine plywood. 1 on the engine room side, and 2 on the stateroom side.

For generators, we pulled out the Northern Lights and the Chinese generator and are dropping in a a Cat 1.5 13.5kw with a full sound enclosure.

Now I just need to figure out exactly how far from the props you have to be before you can run a through hull for raw water on a generator. (thinking about placing it in the lazarette!)

Zach is offline   Reply With Quote
Old 06-08-2010, 18:03   #22
Eternal Member
Chief Engineer's Avatar

Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
I have seen many thruhull located in lazarettes. You just want to make sure they will be underwater at any position of heel.

Chief Engineer is offline   Reply With Quote

engine, insulation

Thread Tools
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
Engine Compartment Insulation Immanuel Construction, Maintenance & Refit 13 27-10-2009 16:16
Jedi Adventures in the Engine Room ;-) s/v Jedi Engines and Propulsion Systems 5 17-07-2009 21:25
More engine room excitement for Estrella AdamY Engines and Propulsion Systems 16 25-04-2007 12:43
Engine room insulation? Strygaldwir Engines and Propulsion Systems 22 26-11-2006 09:34
Engine Compartment Insulation Longhair Engines and Propulsion Systems 8 29-03-2006 05:46

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 19:57.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.