Hatteras 100 Raised PilothouseBy Capt. Bill Pike
CONDITIONS DURING BOAT TESTAir temperature: 73°F; humidity 70%; seas: 4-6'; wind: 20-25 knots
LOAD DURING BOAT TEST4,660 gal. fuel, 410 gal. water, 8 persons, 100 lb. gear.
TEST BOAT SPECIFICATIONS
Test Engine: 2/1,900-hp Caterpillar C32 ACERT diesel inboards
Transmission/Ratio: ZF3350; 4.73:1 ratio
Props: 54 x 80 8-blade Michigan Wheel
|Hatteras 100 Raised Pilothouse - Final Boat Test Numbers:|
|Speeds are two-way averages measured w/ KEP display. GPH estimates taken via Caterpillar display. Range based on 90% of advertised fuel capacity. Decibels measured at lower helm. 65dB-A is the level of normal conversation.|
OPTIONAL EQUIPMENT ON TEST BOAT
Noteworthy Options: Maxwell docking capstans astern
Latham hydraulic swim platform
teak steps bridge and swim-platform steps (prices upon request).
Better Boat: High-Falutin’ Propellers
While the Hatteras 100 Raised Pilothouse is a traditional-looking vessel, with a tastefully styled, conservative sort of interior, her propulsion package is cutting edge. Indeed, if you could look at her props out of the water, they would probably remind you of giant, 8-bladed pinwheels. More to the point, each of the high-skew blades would appear to be rather oddly shaped, almost scimitar-like. Believe it or not though, the underlying point of all this apparent complexity is a simple one—put a lot of total blade area into the water to maximize torque and planing performance at comparatively low revs (thanks to a deep, rev-reducing gear ratio), but divide said area into many parts so that cyclic vibration (comprised of thumps against the underside of a vessel as the prop rotates) is minimized. The scenario seemed to work like gangbusters on our test boat, by the way. Not only did it produce seakindly performance in open water, it made maneuvering the boat in close-quarters situations seem like a breeze.
This article originally appeared in the February 2014 issue of Power & Motoryacht magazine.