GMT Pocket Boom For 108-Footer

The Gilles Vaton designed yacht Zanzibar (formerly named Rogue) has just replaced her main boom with a carbon composite Pocket Boom from GMT Composites. With an E-measurement of 11.45 meters (37 feet 6.75 inches), this is the largest GMT Pocket Boom yet built.
The new boom weighs only 326.6 kg (720 lbs) complete with rigging and wiring, about half the weight of an aluminum furling boom for a yacht of this size. Besides the remarkable weight-savings in this custom foam-cored carbon fiber reinforced fiber-glass and epoxy Pocket Boom, Zanzibar achieved several other important advantages.
Most obvious is the convenience of being able to stow the entire mainsail (or the reefed portion if underway in heavy weather) within the Pocket Boom’s top channel, guided there by simple lazyjacks; this avoids the weight and complexity of internal furling mechanisms while presenting the superior aesthetics of a much slimmer and more attractive profile.
The materials’ difference also effects long-term maintenance and upkeep: this GMT Pocket Boom’s polyurethane paint adheres to the structural materi-als far better than paint on aluminum, so maintenance costs are reduced and aesthetics enhanced.
Zanzibar’s boom includes internal wiring and three underside Cantalupi deck lights, a useful addition for work underway and for entertaining in port, especially as Zanzibar has an active career in the Caribbean charter trade.
Under Spars for Sailboats, go to Booms.