Return to the home page...

Go Back   Moyer Marine Atomic 4 Community - Home of the Afourians > Discussion Topics > Polls

View Poll Results: Thru hull open or closed while underway?
Thru hull open while underway 25 100.00%
Thru hull closed while underway 0 0%
Voters: 25. You may not vote on this poll

Reply
 
Thread Tools Display Modes
  #1   IP: 174.254.192.157
Old 09-06-2020, 12:39 PM
Ando's Avatar
Ando Ando is offline
Senior Member
 
Join Date: Jul 2019
Location: San Pedro, CA
Posts: 247
Thanks: 333
Thanked 58 Times in 38 Posts
Thru hull open or closed underway?

Here’s a poll to ask if you religiously close the thru hull while underway or leave it open. I religiously close it...problem is that I didn’t religiously open it (while battling high winds) and I think I will leave it open while underway just to have one less thing to do under scary circumstances.
Reply With Quote
  #2   IP: 174.30.210.166
Old 09-06-2020, 01:14 PM
roadnsky's Avatar
roadnsky roadnsky is offline
Afourian MVP
 
Join Date: Dec 2008
Location: Lake Mead, NV
Posts: 3,104
Thanks: 24
Thanked 467 Times in 309 Posts
Not sure why you would close the engine intake thru hull while underway?
There is a very high probability of needing to start your engine.
I can think of other reasons for closing it... but not while out sailing.
__________________
-Jerry

'Lone Ranger'

1978 RANGER 30
Reply With Quote
The Following User Says Thank You to roadnsky For This Useful Post:
Ando (09-07-2020)
  #3   IP: 24.152.132.140
Old 09-06-2020, 01:23 PM
ndutton's Avatar
ndutton ndutton is offline
Afourian MVP
 
Join Date: May 2009
Location: Torrance, CA
Posts: 9,619
Thanks: 198
Thanked 2,208 Times in 1,425 Posts
. . . and such practice dictates working anti siphon protection in the exhaust injection line for safety - either a valve or a vented loop (my preference).
__________________
Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
Reply With Quote
The Following User Says Thank You to ndutton For This Useful Post:
Ando (09-07-2020)
  #4   IP: 174.254.192.157
Old 09-06-2020, 01:54 PM
Ando's Avatar
Ando Ando is offline
Senior Member
 
Join Date: Jul 2019
Location: San Pedro, CA
Posts: 247
Thanks: 333
Thanked 58 Times in 38 Posts
Quote:
Originally Posted by roadnsky View Post
Not sure why you would close the engine intake thru hull while underway?
There is a very high probability of needing to start your engine.
I can think of other reasons for closing it... but not while out sailing.
The concern for me was flooding the engine
Reply With Quote
  #5   IP: 72.130.54.63
Old 09-06-2020, 03:01 PM
SubtoSail SubtoSail is offline
Senior Member
 
Join Date: Feb 2018
Location: Oahu
Posts: 23
Thanks: 2
Thanked 9 Times in 7 Posts
I found a checklist on my boat when I bought it that directed closing the raw water valve once shutting down the engine underway. The procedure to start was the same for starting at the pier and underway, and included opening the valve after the engine was running.
My practice is to leave the valve shut while starting next to the pier and then leave it open underway. I also get nervous about flooding the engine, and more often than not I will get antsy while cranking underway so I shut the valve then go back to starting. I’m sure takes less than three seconds to start, but it feels like minutes to me.
Reply With Quote
The Following User Says Thank You to SubtoSail For This Useful Post:
Ando (09-07-2020)
  #6   IP: 137.103.82.227
Old 09-07-2020, 01:16 PM
joe_db's Avatar
joe_db joe_db is offline
Afourian MVP
 
Join Date: May 2009
Posts: 4,474
Thanks: 49
Thanked 1,026 Times in 721 Posts
Bottom line - closing the thru-hull is a band-aid covering up an issue that should be fixed.
Reply With Quote
The Following 3 Users Say Thank You to joe_db For This Useful Post:
Ando (09-07-2020), sastanley (09-09-2020), W2ET (09-07-2020)
  #7   IP: 100.36.65.17
Old 09-08-2020, 12:05 PM
edwardc's Avatar
edwardc edwardc is offline
Afourian MVP
 
Join Date: Aug 2009
Location: Laurel, MD
Posts: 2,509
Thanks: 153
Thanked 595 Times in 388 Posts
When I start the engine after its been sitting a day or more, I make sure the water intake is closed before cranking, in case the engine proves difficult to start (a frequent occurance in colder weather). I open the valve as soon as the A4 starts.

When the engine is warm, or has just been run within the last few houre, it always starts right up, so I leave the valve open while sailing. And yes, I do have an anti-siphon loop.
__________________
@(^.^)@ Ed
1977 Pearson P-323 "Dolce Vita"
with rebuilt Atomic-4


Last edited by edwardc; 09-08-2020 at 12:10 PM. Reason: typo
Reply With Quote
The Following User Says Thank You to edwardc For This Useful Post:
Ando (09-08-2020)
Reply

Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Running the engine with through hull closed Jlmatt Cooling System 8 10-30-2011 06:31 AM
Pulled off the head, need advice on next steps theredboat General Maintenance 21 08-24-2010 11:04 AM
Repairs underway or, it's nice to have spare parts on board. CalebD Troubleshooting 3 10-16-2009 03:01 PM
Open to Closed Water Cooling? Paul65 Cooling System 3 05-17-2006 07:14 AM


All times are GMT -4. The time now is 06:57 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.


Universal® is a registered trademark of Westerbeke Corporation

Copyright © 2004-2024 Moyer Marine Inc.

All Rights Reserved