February/March 2021 — Table of Contents
On the cover: Joel Mill, the lead carpenter and electrician at Devlin Designing Boatbuilders in Olympia, Washington, works on a bus bar for Electric Philosophy’s onboard DC system. Story on page 50.
Photograph by Dieter Loibner.
16/17 TEAR-OUT SUPPLEMENT
Task Sheet: Installing Hardware in Cored Composites
by Steve D’Antonio
A guide to best practices for closing out vulnerable composite core material when installing deck and hull hardware.
20 In the Frame: Part 2
by John Kecsmar
Calculations and cutouts for designing aluminum boat frames.
30 Disposal, Part 1: The Old-Boats Dilemma
by Dieter Loibner
The problem is well documented, and proven technological and regulatory solutions are available. So why does practical end-of-life disposal for old composite boats remain elusive?
44 Inside Your Multimeter
by Don Eley
Understanding the circuitry inside that most useful of electrical troubleshooting devices comes with a little help from Ohm’s Law.
50 North with the Sun
by Dieter Loibner
A retired couple from the Midwest collaborates with designer Sam Devlin to launch a solar-electric cruising catamaran for a zero-emission trip to Alaska and back.
62 Family Firms
by Marilyn DeMartini
The development and succession plans for three fishing boat builders—Bonadeo, Mag Bay, and Tribute—lean heavily on the next generations.
4 Letters, Etc.
Readers comment on the importance of tailgaters, and our varnish maintenance Task Sheet.
compiled by Dieter Loibner
Moi Composites 3D-prints a runabout; a Puget Sound foiling ferry design from Glosten and Bieker Boats; SAY’s carbon fiber 42′; and eight bells Frank Butler.
76 Parting Shot
by Andre Cocquyt
A composites expert and competitive multihull sailor makes the case for a trimaran daysailer for aging baby boomers.
70 New Products and Processes
73 Classified Advertising