Dry, Controlled Ride in Waves

A length to beam ratio greater than 3:1 allows a better transition from modified V-shaped hull with knife-like entry to an 11 foot planning surface with 18-degree deadrise, producing a softer entry into waves than is possible with wider boats. 34z’s bow flare, apart from directing airflow out and away from the pilothouse and cockpit, keeps guests in the stern seat dry and keeps the bow up when running fast down into the backside of waves, eliminating severe yaw (bow steer) … a problem with many Downeast designs. 34z steers with the secure, predictable touch of a sportscar, intuitively leaning into turns at your command.

Twice the Fun on Half the Fuel

w/380 HP 6LY3 Yanmar Diesel This boat chart demonstrates the remarkable fuel efficiency and range of the 34z with only 140 gallons of fuel. For those who care about rising fuel prices or spending too much time at the fuel boat dock, 34z is the answer. Bi-monthly fill-ups on hull #36 with the 380 hp marine engine were 2.8-3.5 gallons per hour of use. 34z gets twin-engine speed with a single marine diesel engine. She gets up on a plane without the unsafe, climbing-out-of-a-hole behavior of heavier boats and won’t drop off a plane until under 10 knots. Riding angle, without use of standard trim tabs, is 3-5 degrees with excellent all-round sight lines … “Like being on a flybridge without having to climb ladders with friends below.” RPM Knots GPH MPG NM Rng 700 4.3 0.4 10.8 1505 1000 6.1 0.6 10.2 1423 1500 8.6 1.4 6.1 860 2000 12.3 4.3 2.9 400 2500 18.5 7.6 2.4 341 2800 22.0 9.7 2.3 318 3000 24.5 11.5 2.1 298 3450 28.5 17.3 1.6 231
w/480 HP 6LY3 Yanmar Diesel 2800 26.1 13.4 1.9 273

Single Prop

3000 28.1 15.8 1.8 249 3450 32.0 20.9 1.5 214
A prop mounted as close as possible to a large rudder provides excellent control when you need it most. BOATING Magazine (June ‘03) advised "...prop-powered boats track better (than jets) in most conditions, especially at slower speeds and particularly when running downsea.... If your cruising ground throws a lot of rough water at you, choose the props”. By coordinating bow thruster, rudder, and shifter, 34z has the agility to crab-walk sideways into tight dock openings. Or, for laughable ease, so no prior experience is necessary, order both the bow and stern thrusters. Easier than parking a car! Note the prop is in a pocket for shoal draft operation and to provide greater protection from groundings, because it protrudes less than 1 foot under the deepest part of the hull which is forward (See diagram on last page ), the part of the boat which is most likely to impact the bottom to stop the boat before doing serious damage to the running gear.

Kevlar-Epoxy Construction

34z is ISO (CE) Certified and may be the only design of its type to exceed international CE Mark (ISO) draft structural requirements for a Class A Ocean-Going Yacht. MJM’s licensed builder, Boston BoatWorks, has more than 25 years experience in building boats using a high-tech, wet pre-preg, vacuum-bagged and post-oven-cured, epoxy/Kevlar/E-glass/Corecell construction method. 34z is built tough, more like an airplane or America’s Cup racing yacht than a motorboat. Her solid FRP keel and chines are so dense, they are like steel. The boat’s high strength-to-weight ratio results in lighter overall weight, easier handling, superior fuel efficiency and better speed.