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Old 03-13-2019, 01:31 PM   #18
twistedtree's Avatar
City: Gloucester, MA
Country: USA
Join Date: Jan 2013
Posts: 4,948
This is all anecdotal and/or second hand, but this is what I know from Nordhavns.

- The fastest and most efficient hulls they have made are the 50 and 57, both of which have bulbs. How much of that comes from the bulb I don't know.

- A common complaint was/is the slapping when in heavy head seas.

- The slapping is not the bulb hitting the water surface, but rather the water coming together over the top of the bulb as it submerges. The water coming back together "claps" as you would clap your hands.

- Bulbs are now only offered on the 76 and larger boats, and have a flattened top surface that reduces the water clapping.
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