Garvey Repairs to Main Mast Step

Photos taken by Jim Franchi, April 9, 2011, of the rebuild of the mast step. These show the construction detail quite well, and especially the member called the “carlin”.


The carlin is a fore-aft deck member, here the slightly reddish phillipine mahogany board. Shannon is fitting the carlin. 

Frame and more

A good view of shannon's frame, the trapezoidal piece installed just in front of his knees. The two vertical boards just touching the frame will be the sides of the mast step. A hole called the “partner” must be cut into the carlin to accommodate the mast. Also the two short verticals (installed a couple of years ago) are the cleats that hold the base of the sampson post. A second hole in the carlin will accommodate that post. 

Another view

Measuring to cut a Mortise


Showing how the stem is mortised into the front of the carlin, and the carlin into the frame. The latter mortise is particularly important, as the carlin absorbs the side thrust from the mast and transmits that to the frame. That thrust can be a thousand pound or more. The frame wood and other lighter new wood is white oak.


The partner is cut and Shannon is testing that it will accommodate the mast.

More Testing

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Navesink Maritime Heritage Association is a 501(c)3 not-for-profit organization dedicated to preserving knowledge and appreciation of Monmouth County's maritime heritage through programs that teach wooden boat building and boat handling skills; through preserving the history of Monmouth County's wooden boat builders and other maritime history; and through the experiental on-the-water programs of River Rangers for middle school children and Sea Scout Ship Navesink for co-ed youth age 14-21.

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