Repair of Transom Which Has Split at the Bottom

Repair or modification of Boston Whaler boats, their engines, trailers, and gear
malcHILL
Posts: 10
Joined: Tue Apr 01, 2025 10:47 am

Repair of Transom Which Has Split at the Bottom

Postby malcHILL » Tue Apr 01, 2025 12:31 pm

[Moderator's note: separated from another thread which contained too many topics for useful discussion.]

Q1: how can the transom of a neglected c.1979 MONTAUK 17 that has a split at the bottom be repair?

jimh
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Joined: Fri Oct 09, 2015 12:25 pm
Location: Michigan, Lower Peninsula
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Re: Repair of Transom Which Has Split at the Bottom

Postby jimh » Tue Apr 01, 2025 12:37 pm

malcHILL wrote:Q1: how can the transom of a neglected c.1979 MONTAUK 17 that has a split at the bottom be repair?
Any failure of the hull laminate at the transom which has allowed seawater of freshwater to enter the transom area is a serious concern. The transom of a c.1979 MONTAUK 17 contains embedded wood reinforcement, typically in the form of marine plywood. When exposed to water, particularly freshwater, there is a risk of rot forming in the plywood. Even without rot, if the plywood is saturated with water its strength is lost.

The first step in a proper repair is to assess the condition of the embedded wood in the transom and the resistance of the transom to bending or deformation from the forces exerted on it by the outboard engine. A simple test for can be done when the boat is on the trailer and by using the outboard engine as a lever. Hold the engine by the keg and exert force upward or downward. Observe the transom for any indication of yielding or flexing. Report your findings and more advice can be offered.

MORE INFORMATON
For more information about the MONTAUK 17, including links to locations of embedded wood reinforcements, see the REFERENCE section article of the 16/17 hull at

The 16/17-foot Hull
https://continuouswave.com/whaler/reference/16-17/

Reading the above article will also give you more background on the boat you now have.

malcHILL
Posts: 10
Joined: Tue Apr 01, 2025 10:47 am

Re: Repair of Transom Which Has Split at the Bottom

Postby malcHILL » Tue Apr 01, 2025 2:08 pm

Currently the engine is removed, the boat is upside-down on a trailer, with repairs done to the bottom of the transom.

Q1: How can I test the transom in it's current state? I would rather be safe than sorry so I would assume that the transom needs to be re-inforced