Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 10-09-2012, 19:57   #1
Registered User

Join Date: Aug 2012
Location: Grosse Ile, Michigan
Boat: Beneteau Oceanis 370 (36 ft)
Posts: 19
Raw water strainer

My Beneteau has a Volvo diesel model 2003. There is no raw water intake strainer. This is how the boat was designed and biult in 1993. I sail on Lake Erie. Is this a problem not having a strainer on the raw water inlet?
__________________

__________________
islandrunner70 is offline   Reply With Quote
Old 10-09-2012, 20:12   #2
Sponsoring Vendor
 
HopCar's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: May 2011
Location: Miami Florida
Boat: Ellis Flybridge 28
Posts: 3,160
Re: Raw water strainer

Apparantly not since your boat is almost twenty years old.
I know many boats are made now without internal sea strainers but they have external strainers with fine holes in them. I'd be worried about sucking up a plastic bag and choking the cooling water to the engine without some sort of strainer.
__________________
Hopkins-Carter Marine Supplies & Fishing Tackle
What You Need, at the Price You Want...with Service!
HopCar is offline   Reply With Quote
Old 10-09-2012, 20:21   #3
Senior Cruiser
 
jackdale's Avatar

Cruisers Forum Supporter

Join Date: Mar 2008
Location: Calgary, AB, Canada
Posts: 5,048
Images: 1
Re: Raw water strainer

It should not be difficult to retrofit one. Consider mounting it above the waterline and with an anti-siphoning loop.

Plastic bags are not an issue. Sea weed, small fish, and algae are among the things I have cleaned out of a sea strainer.
__________________
ISPA Yachtmaster Ocean Instructor Evaluator
Sail Canada Advanced Cruising Instructor
IYT Yachtmaster Coastal Instructor
ASA 201, 203,204, 205, 206, 214
As I sail, I praise God, and care not. (Luke Foxe)
jackdale is online now   Reply With Quote
Old 10-09-2012, 20:41   #4
Sponsoring Vendor
 
HopCar's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: May 2011
Location: Miami Florida
Boat: Ellis Flybridge 28
Posts: 3,160
Re: Raw water strainer

"Plastic bags are not an issue."
They would be if you didn't have an external strainer and motored near an urban area. The damn things get everywhere! They look like weird jellyfish in the water.
__________________
Hopkins-Carter Marine Supplies & Fishing Tackle
What You Need, at the Price You Want...with Service!
HopCar is offline   Reply With Quote
Old 10-09-2012, 20:53   #5
Registered User

Join Date: Nov 2011
Location: Montegut LA.
Boat: Now we need to get her to Louisiana !! she's ours
Posts: 3,421
Re: Raw water strainer

Yep Hop Car plastic is gonna kill us all someday !!
__________________
Bob and Connie
bobconnie is offline   Reply With Quote
Old 10-09-2012, 20:54   #6
Registered User

Join Date: Mar 2011
Location: Miami
Boat: Explorer 45
Posts: 75
Send a message via Skype™ to Brazil
Quote:
Originally Posted by islandrunner70
My Beneteau has a Volvo diesel model 2003. There is no raw water intake strainer. This is how the boat was designed and biult in 1993. I sail on Lake Erie. Is this a problem not having a strainer on the raw water inlet?
Without a raw water strainer you end up changing impellers much more often. My previous boat did not had one and the impeller used to last less than 50 hs. Once I installed the strainer the impeller never Went bad again.
__________________
Brazil is offline   Reply With Quote
Old 10-09-2012, 21:01   #7
Senior Cruiser
 
jackdale's Avatar

Cruisers Forum Supporter

Join Date: Mar 2008
Location: Calgary, AB, Canada
Posts: 5,048
Images: 1
Re: Raw water strainer

Quote:
Originally Posted by HopCar View Post
"Plastic bags are not an issue."
They would be if you didn't have an external strainer and motored near an urban area. The damn things get everywhere! They look like weird jellyfish in the water.
I have had them attach themselves to the raw water inlet and to a cutlass bearing. I doubt if they could get to a sea strainer.
__________________
ISPA Yachtmaster Ocean Instructor Evaluator
Sail Canada Advanced Cruising Instructor
IYT Yachtmaster Coastal Instructor
ASA 201, 203,204, 205, 206, 214
As I sail, I praise God, and care not. (Luke Foxe)
jackdale is online now   Reply With Quote
Old 10-09-2012, 21:21   #8
Sponsoring Vendor
 
HopCar's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: May 2011
Location: Miami Florida
Boat: Ellis Flybridge 28
Posts: 3,160
Re: Raw water strainer

"I have had them attach themselves to the raw water inlet"
That didn't cause a problem?

"I doubt if they could get to a sea strainer. "
I don't see why not. But they don't have to get to the strainer to cause a problem. Just get one sucked over the raw water inlet and it can block the intake.
__________________
Hopkins-Carter Marine Supplies & Fishing Tackle
What You Need, at the Price You Want...with Service!
HopCar is offline   Reply With Quote
Old 10-09-2012, 21:42   #9
Senior Cruiser
 
jackdale's Avatar

Cruisers Forum Supporter

Join Date: Mar 2008
Location: Calgary, AB, Canada
Posts: 5,048
Images: 1
Re: Raw water strainer

Quote:
Originally Posted by HopCar View Post
"I have had them attach themselves to the raw water inlet"
That didn't cause a problem?

"I doubt if they could get to a sea strainer. "
I don't see why not. But they don't have to get to the strainer to cause a problem. Just get one sucked over the raw water inlet and it can block the intake.
The engine overheat alarm went off. I shut down the engine, did some trouble shooting, and then noticed a bag come floating from under the hull. The suction had released the the bag. I have had a kelp leaf do the same thing.

The inlet aperture is small enough that I do not see a bag getting into the hose.

On a delivery from Maui this year I was concerned enough that we carried two spare impellers and regularly checked the sea strainer as we went through the Pacific gyre which has a lot a plastic particulate matter just below the surface. Fortunately that was not a problem.
__________________
ISPA Yachtmaster Ocean Instructor Evaluator
Sail Canada Advanced Cruising Instructor
IYT Yachtmaster Coastal Instructor
ASA 201, 203,204, 205, 206, 214
As I sail, I praise God, and care not. (Luke Foxe)
jackdale is online now   Reply With Quote
Old 11-09-2012, 02:26   #10
Registered User

Join Date: Aug 2012
Location: Grosse Ile, Michigan
Boat: Beneteau Oceanis 370 (36 ft)
Posts: 19
Thanks for all the great feedback. I should have mentioned that there is an external strainer. I was wondering if it is a good idea to have both.

Thanks.
__________________
islandrunner70 is offline   Reply With Quote
Old 11-09-2012, 06:37   #11
Registered User
 
ranger42c's Avatar

Join Date: Aug 2012
Location: Maryland, USA
Boat: 42' Sportfish
Posts: 2,984
Re: Raw water strainer

Depends. Having both internal and external strainers may affect your water pump's ability to draw in raw water fast enough to meet engine cooling requirements. Your engine specs will likely speak to minimum flow rate...

-Chris
__________________
Selby Bay, South River, Chesapeake Bay, USA.
ranger42c is offline   Reply With Quote
Old 11-09-2012, 06:52   #12
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 5,775
Re: Raw water strainer

Quote:
Originally Posted by jackdale View Post
It should not be difficult to retrofit one. Consider mounting it above the waterline and with an anti-siphoning loop.
Ahhhh......no siphon breaks on the suction side
__________________

__________________
Sailmonkey is online now   Reply With Quote
Reply

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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:06.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.