Twin 15" Mercury Inertia's
Here are a pair of 15" x 15" Mercury Enertia's fitted with Evinrude hubs on a 25', 1967 Bertram Moppie.
Lots of blade surface for cruising. The 115's turning 4,150 make 23 MPH, 5,500 make 35 MPH. The boat and gear is 7,000#+ when we push away from the dock. Topped off with 36 gallons after last 84 mile trip.
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