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Old 02-24-2014, 06:41 PM   #21
City: Vero Beach, FL.
Country: US
Vessel Name: FIREFLY
Vessel Model: Pilgrim 40
Join Date: Nov 2012
Posts: 913
I like my hull, no noise at anchor. I have in the past owned fast noisy hulls and tried to convince myself that it was a soothing sound, but it's not, it's noise.

I have changed from an all chain rode to 60 ft of chain and the rest nylon square line and am astonished at the quiet at anchor.

I like quiet.

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Old 02-24-2014, 07:02 PM   #22
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City: South FL
Country: U.S.A
Vessel Name: Oliver
Vessel Model: Nordhavn 47 Hull# 12
Join Date: Apr 2013
Posts: 3,613
Here's some pics of my uncles boat he added the chines for spray amidships/aft and lift if memory serves right. Hope this helps.
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Thanks, Oliver
M/V Oliver
Nordhavn 47 Hull #12
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Old 02-26-2014, 06:53 PM   #23
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City: Sacramento Delta
Country: USA
Join Date: Feb 2014
Posts: 57
There are a few different "slapper stoppers" out there. Funny you should mention a Nordic Tug 42 as the only guy I know with a slapper stopper has this boat.
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Old 02-26-2014, 07:22 PM   #24
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City: SF Bay Area
Country: USA
Vessel Model: Tollycraft 34' Tri Cabin
Join Date: Feb 2011
Posts: 9,006
Hey... for real fun - try sleeping in V-berth on a 32' lapstrake woody. My dad bought one, a Johnson Brothers boat in late 50's... lasted less than one NY boat season till he sold it. Constantly sounded like loud perking coffee in an old glass top / stove top coffee percolator, even in dead calm water. If someone so much as rolled over in bunk or walked to use the head in calm water the noise would co on for minutes When a wake hit or wind created even tiny waves you might as well get up and play cards - no sleeping possible! I detest lapstrake boats for that reason, alone!

BTW - Our Tolly makes not a sound to interrupt sleep
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Old 02-27-2014, 10:50 AM   #25
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City: Watch Hill RI
Vessel Name: Puffin
Vessel Model: Nordic Tug 32/34
Join Date: Jan 2008
Posts: 122
hull slapping

This subject comes up a couple of times a year in this and other tug/trawler forums. Since I have the "notorious' Nordic Tug, I'll add my 2 cents.

Nordic Tugs, a semi displacement hull with hard chines, does have a notorious rep for hull slap. The first night on the mooring, I knew I had to do something. Canvas wave slap preventers, which I made up, do work (picture attached), but a pain to deploy, and a safety factor when anchored out (not to mention embarrassing). Putting 4" of sound deadening foam panels inside the hull muffled the slap, but did not eliminate it. I took the plunge and filled in the chines... a combination of bonding in CoreCell foam panels, covered with a couple of layers of carbon cloth and layers of epoxy resin. Problem solved, with no impact on performance, lift, or wave deflection. I know several other NT owners that have filled in chines. The chine area filled in on my 18 knot top-end hull is several inches aft of where the water meets the chine and going forward for about 48". As the hull lifts up above 7-8 knots, the filled area is out of the water.
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Old 02-27-2014, 03:57 PM   #26
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Join Date: Oct 2011
Posts: 8,736
We just get up and slap the water right back, it soon gives up and we sleep well.
Island Gypsy 36 Europa "Doriana"
Sydney Australia
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Old 02-28-2014, 04:42 AM   #27
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Join Date: Oct 2007
Posts: 17,839
Anchored the windage is about the same if you anchor by the stern.

Even by the stern quarter might be less noisy , but at 3 AM some doofus might want to >rescue< the boat.

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