Professional BoatBuilder - December-January 2018

2 PROFESSIONAL BOATBUILDER

SCOTT BROWN

JOHN BILDAHL

NIGEL CALDER

A hybrid wing sail. Page 48.

Rybovich rebuilds. Page 20.

New battery technology. Page 32.

Exhaust best practices. Page 60.

STEVE D’ANTONIO

FEATU R E S

20 Rybovich Rebuild^ × 2 by Aaron Porter

Two classic Rybovich 36 sport shermen are unconventionally restored

with modern composites at Bandy Boats.

32 Pushing Batteries to the Limit by Nigel Calder

Supercharged energy systems have arrived. Here’s what you need to

know to ensure safe and reliable installations as onboard systems

transition to the new technology.

48 First Encounter by Jim Brown

Fast Forward Composites debuts a hybrid wing sail—half rigid wing,

half so sail.

60 Internal Combustion’s Backside by Steve D’Antonio

For new and re t vessels, we cover the fundamentals of exhaust system

design, installation, and analysis.

DE PA RT M E N T S

4 Letters, Etc.

Readers comment on the hydrodynamics of the W17, and smoke detector

requirements.

10 Rovings compiled by Dan Spurr

 e legacy of Meade Gougeon; an innovative Dutch  shboat; heavy-duty

cable ties; in ated sails; pink stain solved; and eight bells, Doug Peterson.

88 Parting Shot by Gregory G. Group

A veteran yacht surveyor recounts his recent training experience

and shares a recipe to update continuing education and certi cation

requirements.

READER SERVICES

77 Advertisers’ Product Showcase

82 Connections

85 Classi ed Advertising

87 Index to Advertisers

On the cover:  e 1954-vintage Rybovich 36 Butterball is returned to the shop

at Bandy Boats in Mayo, Maryland, where she and her near twin Timid Tuna

were brought back from derelict in protracted rebuilds that included repow-

ering with single engines; new cold-molded bottoms;  berglass-and- epoxy

topsides; Corecell-and- berglass deck, house, and  ying bridge structures; and

distinctive paint jobs. Story on page 20.

Photograph by John Bildahl.

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