sentoa@lists.sentoa.org

South East Nordic Tugs Owners' Association (SENTOA)

View all threads

Re: leave

T
tgpoole0923@gmail.com
Wed, Sep 17, 2025 2:47 PM

Tom Poole
119 Doral Lane
Southington CT  06489
Tgpoole0923@gmail.com

-----Original Message-----
From: sentoa-request@lists.sentoa.org sentoa-request@lists.sentoa.org
Sent: Wednesday, September 17, 2025 10:33 AM
To: sentoa@lists.sentoa.org
Subject: Sentoa Digest, Vol 172, Issue 6

Send Sentoa mailing list submissions to
sentoa@lists.sentoa.org

To subscribe or unsubscribe via email, send a message with subject or body 'help' to
sentoa-request@lists.sentoa.org

You can reach the person managing the list at
sentoa-owner@lists.sentoa.org

When replying, please edit your Subject line so it is more specific than "Re: Contents of Sentoa digest..."

Today's Topics:

  1. Re: NT37 Leaks (Tim Cooper)
  2. Re: NT37 Leaks (Ben McCafferty)

Message: 1
Date: Wed, 17 Sep 2025 07:28:40 -0700
From: "Tim Cooper" tccooper1@comcast.net
Subject: [Sentoa] Re: NT37 Leaks
To: "'South East Nordic Tugs Owners' Association (SENTOA)'"
sentoa@lists.sentoa.org
Message-ID: 01b101dc27df$5db55f30$19201d90$@comcast.net
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_01B2_01DC27A4.B15AF400"

Thank you everyone for all the great advice, it is really appreciated.

I started yesterday on the V berth leak focusing on the anchor locker. I omitted what I had done this summer on my original post. After reading the archive, while in Petersburg, I unloaded the anchors and found the bottom of the lockers had a plastic-ish coating. The PO noted having the anchor locker floor rebuilt in 2017. After inspection, I got some plastic tubing and some 4200. I put the 4200 on the tubing and slid it into the drain holes. I had no time to test if it helped or hurt. I gave the 4200 the night to cure and loaded the anchor and we were on our way. I also went around the top rub rail and tightened all the screws.

I dried near the thruster and the battery then ran the thruster in both directions several times with no water intrusion. I unloaded the anchors. Trying to separate the two sides I tried to tape the hole between sides with good heavy-duty tape. It wouldn’t stick to the plastic-ish coating, I tried a couple types but no luck. So, I filled the locker with 6” of water and got a trickle forward of the thruster. I wanted to see if I could separate the drain tube from the floor. I tried using a Phillips screwdriver to plug the tubing in the drain hole but the tubing pushed out the hull and water gushed in forward of the thruster. I repeated pushing out the tubing on the port side with the same result. I finally thought of the foam cone I have for plugging holes in the hull to separate the two sides, it worked ok but the hole isn’t round. The 4200 couldn’t stick to the plastic-ish coating.

I am know focused on removing the plastic-ish coating and finding a tube material that can be epoxied in place. This is likely to take several days, if not longer.

Tim Cooper 37-059 Time To Play

From: Harry Hungate via Sentoa sentoa@lists.sentoa.org
Sent: Tuesday, September 16, 2025 12:11 PM
To: sentoa@lists.sentoa.org
Cc: Harry Hungate wcx7106@gmail.com
Subject: [Sentoa] Re: NT37 Leaks

We use Gardner-Bender Duct Seal to keep water from entering around the chain/hawse hole.  Purchase at Home Depot or Lowes.  Electricians use it to seal conduits and refer to it lovingly as "monkey shit".

Harry Hungate

Bessie NT 32-238

On Sep 16, 2025, at 12:23 PM, Richard Cohen via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org > wrote:



On our 37 (NT37-079) the grey water and head sink drains exited above the waterline so unlikely sources.

I replace the entire bow thruster which the factory had installed with 5200, there is a relatively small mounting surface on the thruster leg, but I suspect it is not that.  If there is water intrusion there it should be obvious inside the grey metal mount under the motor.  If you want/need to take out the bow thruster you need a 17mm cone wrench to hold the bolts behind cables on the lugs. https://www.amazon.com/Bikehand-Bicycle-Install-Remover-Spanner/dp/B089GFQQZT/ref=sr_1_3_sspa?crid=1OD9EX0MS238I&dib=eyJ2IjoiMSJ9.q9PUpcLcHu5-oji8GxuqT6awXifI3ehvILf1rn-EzqC7N64EGBJjbgYwRviDKL_lff0tz26L9Jb_G29I4ab_22OchfNMSCU_VXsbh9ctz3w49Z20WyFRUvqPbWF2qVHD8FBzQHI_YZurqXzIPDXyOSOj33PxDWeJtqJAF9QZzzqM0xMgC0FkosWqOE_waucuc9Q7orOmCYXhpi5VKHe6Wyck7T9MKf0Hmsb9_sQDt3nRHy9Wob06oMKeBpUbUntS9taJukmHp6kldst1gYemtizohl5CD50fQi1QwOH7pQ0.60ictV96fSqUnTkHmqdYIDOJjGPUGpQNopGRaCCG24w&dib_tag=se&keywords=17mm%2Bcone%2Bwrench&qid=1758039408&sprefix=17mm%2Bcone%2B%2Caps%2C136&sr=8-3-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1&psc=1.  Do not remove the cables without holding those backing nuts

My assumption is that significant saltwater leakage from the railing and other deck hardware would be hard to produce that much water, if it were fresh water from rain or hose that would make more sense.

I always used modeling clay wrapped around the chain in the hawser under the windless.  In rough weather that can let in a ton of salt water.  I might try a hose into that hawser and see if that flows into the under bunk area.

Good luck

Richard Cohen
Managing Partner

http://www.bostoncio.com/  BOSTON http://www.bostoncio.com/ CIO

BostonCIO LLC
tel:(508)%20265-7277 (508) 265-7277
mailto:rcohen@bostoncio.com RCohen@BostonCIO.com
https://www.facebook.com/BostonCIO-LLC-209170469076/ Facebook  |  https://www.linkedin.com/company/bostoncio-llc LinkedIn

From: Ben McCafferty via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org >
Sent: Tuesday, September 16, 2025 11:48 AM
To: South East Nordic Tugs Owners' Association (SENTOA) <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org >
Cc: tccooper1@comcast.net mailto:tccooper1@comcast.net ; Ben McCafferty <bmacpiper@me.com mailto:bmacpiper@me.com >
Subject: [Sentoa] Re: NT37 Leaks

For both hanging lockers I’d suspect the portholes. The rubber seal in ours has to be perfectly “square” to seal properly. With a little twist in the seal it leaks, and that’s a straight shot down to your locker floors. I know you said walls are dry, but perhaps they dried after the leak and puddling happened? Are the walls carpeted? Have a look at the top of the lockers just below the portholes also—ours are slightly delaminated from other owners (and us) having had a leak there.

V-berth, the obvious thought there would be to start with the penetration of the thruster and go from there. Nothing else comes to mind right away, but perhaps another penetration nearby (grey water thru hull, head sink thru hull, etc.?).

Curious what you find!

On Sep 16, 2025, at 08:34, Tim Cooper via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org > wrote:

After cruising this summer we have more leaks than we were aware of so now it is time to address them. I have gone through the archive and seen mentions but no definite solutions. I will report back once leaks are identified and fixed. I would appreciate any help or guidance from all.

  1. Saltwater under V-berth, this has existed since we have owned the boat 2018, I think. I dried it out near the thruster battery and up by the thruster. Just sitting no water, after cruising both places have saltwater. The level is always the same because excess flows to bilge pump. We are normally in freshwater so it hasn’t been a big concern but now it is time to dry it out.
  2. Saltwater soaked floor in starboard hanging locker or closet. Using a moisture meter I haven’t found the path for the water. The walls in the closet are dry. This summer is the first time we have seen this.
  3. Saltwater soaked floor in port hanging locker or closet. I haven’t done any investigation yet but it doesn’t seem to be as bad as the starboard side. This summer is the first time we have seen this.

Thanks

Tim Cooper 37-059 Time To Play


Sentoa mailing list -- sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org To unsubscribe send an email to sentoa-leave@lists.sentoa.org mailto:sentoa-leave@lists.sentoa.org


Sentoa mailing list -- sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org To unsubscribe send an email to sentoa-leave@lists.sentoa.org mailto:sentoa-leave@lists.sentoa.org

Tom Poole 119 Doral Lane Southington CT 06489 Tgpoole0923@gmail.com -----Original Message----- From: sentoa-request@lists.sentoa.org <sentoa-request@lists.sentoa.org> Sent: Wednesday, September 17, 2025 10:33 AM To: sentoa@lists.sentoa.org Subject: Sentoa Digest, Vol 172, Issue 6 Send Sentoa mailing list submissions to sentoa@lists.sentoa.org To subscribe or unsubscribe via email, send a message with subject or body 'help' to sentoa-request@lists.sentoa.org You can reach the person managing the list at sentoa-owner@lists.sentoa.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Sentoa digest..." Today's Topics: 1. Re: NT37 Leaks (Tim Cooper) 2. Re: NT37 Leaks (Ben McCafferty) ---------------------------------------------------------------------- Message: 1 Date: Wed, 17 Sep 2025 07:28:40 -0700 From: "Tim Cooper" <tccooper1@comcast.net> Subject: [Sentoa] Re: NT37 Leaks To: "'South East Nordic Tugs Owners' Association \(SENTOA\)'" <sentoa@lists.sentoa.org> Message-ID: <01b101dc27df$5db55f30$19201d90$@comcast.net> Content-Type: multipart/alternative; boundary="----=_NextPart_000_01B2_01DC27A4.B15AF400" Thank you everyone for all the great advice, it is really appreciated. I started yesterday on the V berth leak focusing on the anchor locker. I omitted what I had done this summer on my original post. After reading the archive, while in Petersburg, I unloaded the anchors and found the bottom of the lockers had a plastic-ish coating. The PO noted having the anchor locker floor rebuilt in 2017. After inspection, I got some plastic tubing and some 4200. I put the 4200 on the tubing and slid it into the drain holes. I had no time to test if it helped or hurt. I gave the 4200 the night to cure and loaded the anchor and we were on our way. I also went around the top rub rail and tightened all the screws. I dried near the thruster and the battery then ran the thruster in both directions several times with no water intrusion. I unloaded the anchors. Trying to separate the two sides I tried to tape the hole between sides with good heavy-duty tape. It wouldn’t stick to the plastic-ish coating, I tried a couple types but no luck. So, I filled the locker with 6” of water and got a trickle forward of the thruster. I wanted to see if I could separate the drain tube from the floor. I tried using a Phillips screwdriver to plug the tubing in the drain hole but the tubing pushed out the hull and water gushed in forward of the thruster. I repeated pushing out the tubing on the port side with the same result. I finally thought of the foam cone I have for plugging holes in the hull to separate the two sides, it worked ok but the hole isn’t round. The 4200 couldn’t stick to the plastic-ish coating. I am know focused on removing the plastic-ish coating and finding a tube material that can be epoxied in place. This is likely to take several days, if not longer. Tim Cooper 37-059 Time To Play From: Harry Hungate via Sentoa <sentoa@lists.sentoa.org> Sent: Tuesday, September 16, 2025 12:11 PM To: sentoa@lists.sentoa.org Cc: Harry Hungate <wcx7106@gmail.com> Subject: [Sentoa] Re: NT37 Leaks We use Gardner-Bender Duct Seal to keep water from entering around the chain/hawse hole. Purchase at Home Depot or Lowes. Electricians use it to seal conduits and refer to it lovingly as "monkey shit". Harry Hungate Bessie NT 32-238 On Sep 16, 2025, at 12:23 PM, Richard Cohen via Sentoa <sentoa@lists.sentoa.org <mailto:sentoa@lists.sentoa.org> > wrote:  On our 37 (NT37-079) the grey water and head sink drains exited above the waterline so unlikely sources. I replace the entire bow thruster which the factory had installed with 5200, there is a relatively small mounting surface on the thruster leg, but I suspect it is not that. If there is water intrusion there it should be obvious inside the grey metal mount under the motor. If you want/need to take out the bow thruster you need a 17mm cone wrench to hold the bolts behind cables on the lugs. https://www.amazon.com/Bikehand-Bicycle-Install-Remover-Spanner/dp/B089GFQQZT/ref=sr_1_3_sspa?crid=1OD9EX0MS238I&dib=eyJ2IjoiMSJ9.q9PUpcLcHu5-oji8GxuqT6awXifI3ehvILf1rn-EzqC7N64EGBJjbgYwRviDKL_lff0tz26L9Jb_G29I4ab_22OchfNMSCU_VXsbh9ctz3w49Z20WyFRUvqPbWF2qVHD8FBzQHI_YZurqXzIPDXyOSOj33PxDWeJtqJAF9QZzzqM0xMgC0FkosWqOE_waucuc9Q7orOmCYXhpi5VKHe6Wyck7T9MKf0Hmsb9_sQDt3nRHy9Wob06oMKeBpUbUntS9taJukmHp6kldst1gYemtizohl5CD50fQi1QwOH7pQ0.60ictV96fSqUnTkHmqdYIDOJjGPUGpQNopGRaCCG24w&dib_tag=se&keywords=17mm%2Bcone%2Bwrench&qid=1758039408&sprefix=17mm%2Bcone%2B%2Caps%2C136&sr=8-3-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1&psc=1. Do not remove the cables without holding those backing nuts My assumption is that significant saltwater leakage from the railing and other deck hardware would be hard to produce that much water, if it were fresh water from rain or hose that would make more sense. I always used modeling clay wrapped around the chain in the hawser under the windless. In rough weather that can let in a ton of salt water. I might try a hose into that hawser and see if that flows into the under bunk area. Good luck Richard Cohen Managing Partner <http://www.bostoncio.com/> BOSTON <http://www.bostoncio.com/> CIO BostonCIO LLC <tel:(508)%20265-7277> (508) 265-7277 <mailto:rcohen@bostoncio.com> RCohen@BostonCIO.com <https://www.facebook.com/BostonCIO-LLC-209170469076/> Facebook | <https://www.linkedin.com/company/bostoncio-llc> LinkedIn From: Ben McCafferty via Sentoa <sentoa@lists.sentoa.org <mailto:sentoa@lists.sentoa.org> > Sent: Tuesday, September 16, 2025 11:48 AM To: South East Nordic Tugs Owners' Association (SENTOA) <sentoa@lists.sentoa.org <mailto:sentoa@lists.sentoa.org> > Cc: tccooper1@comcast.net <mailto:tccooper1@comcast.net> ; Ben McCafferty <bmacpiper@me.com <mailto:bmacpiper@me.com> > Subject: [Sentoa] Re: NT37 Leaks For both hanging lockers I’d suspect the portholes. The rubber seal in ours has to be perfectly “square” to seal properly. With a little twist in the seal it leaks, and that’s a straight shot down to your locker floors. I know you said walls are dry, but perhaps they dried after the leak and puddling happened? Are the walls carpeted? Have a look at the top of the lockers just below the portholes also—ours are slightly delaminated from other owners (and us) having had a leak there. V-berth, the obvious thought there would be to start with the penetration of the thruster and go from there. Nothing else comes to mind right away, but perhaps another penetration nearby (grey water thru hull, head sink thru hull, etc.?). Curious what you find! On Sep 16, 2025, at 08:34, Tim Cooper via Sentoa <sentoa@lists.sentoa.org <mailto:sentoa@lists.sentoa.org> > wrote: After cruising this summer we have more leaks than we were aware of so now it is time to address them. I have gone through the archive and seen mentions but no definite solutions. I will report back once leaks are identified and fixed. I would appreciate any help or guidance from all. 1. Saltwater under V-berth, this has existed since we have owned the boat 2018, I think. I dried it out near the thruster battery and up by the thruster. Just sitting no water, after cruising both places have saltwater. The level is always the same because excess flows to bilge pump. We are normally in freshwater so it hasn’t been a big concern but now it is time to dry it out. 2. Saltwater soaked floor in starboard hanging locker or closet. Using a moisture meter I haven’t found the path for the water. The walls in the closet are dry. This summer is the first time we have seen this. 3. Saltwater soaked floor in port hanging locker or closet. I haven’t done any investigation yet but it doesn’t seem to be as bad as the starboard side. This summer is the first time we have seen this. Thanks Tim Cooper 37-059 Time To Play _______________________________________________ Sentoa mailing list -- sentoa@lists.sentoa.org <mailto:sentoa@lists.sentoa.org> To unsubscribe send an email to sentoa-leave@lists.sentoa.org <mailto:sentoa-leave@lists.sentoa.org> _______________________________________________ Sentoa mailing list -- sentoa@lists.sentoa.org <mailto:sentoa@lists.sentoa.org> To unsubscribe send an email to sentoa-leave@lists.sentoa.org <mailto:sentoa-leave@lists.sentoa.org>