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the Right Whale, Krogen Whaleback, hull #8 (thanks to her owners, Dolph and Beverly McCranie):
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6.1 Technical Description and Features
Full-displacement hull.
LOA..............................48'-5"
LWL..............................48'-5"
Beam.............................16'-8"
Beam (over rub rails)............17'-3"
Draft.............................5'-0"
Displacement (half load).......56,200 lbs
Fuel............................1,020 gals
Water.............................540 gals
Ballast.........................4,500 lbs
Approx. Range: 9 kts............1,450 nm
8 kts............2,000 nm
7 kts............2,550 nm
6 kts............3,000 nm
(includes 1 gal/hr for genset)
Bridge clearance (Mast up).......30'-0"
Bridge clearance (mast down).....17'-6"
Gross tonnage....................70.62
Net tonnage......................56.60
Engine room volume..............520 cu. ft.
Forward machine space volume....450 cu. ft.
Engine.......................Cat 3208 (210 hp) Diesel
Hydrostatic data:
Displ/length ratio (D/L)........268
A/B ratio.......................2.6
Prismatic coef. (PC)............0.60
Lbs/inch immersion..............2,600 lbs/in
Moment to trim one inch.........6,272 ft-lbs
L.C.B...........................51.8% aft
L.C.F...........................55.8% aft
Stability:
GM (approx).....................4.29 ft.
Range of positive stability.....110 degrees
KM at design LWL................11.15 ft.
Maximum righting moment.........136,800 ft-lbs
KG (half load)..................6.86 ft.
Construction:
Solid, hand-laid PPG Combo mat fiberglass below the waterline. Closed cell PVC sandwich core used in topsides and superstructure. End-grain balsa-cored pilot house and boat deck. Vinylester resin used in first two laminates below the waterline. Exterior finish US Ferro gelcoat. 3M 5200 sealants used at hull-to-deck and boat-deck joints. Marine-grade plywood bulkheads with mahogany stringers and frames.
The current production Whaleback:
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6.2 Production History and Variations
Initial production 1993. At least 8 have been launched.
Some interior shots of the Krogen Whaleback (salon and pilot house):
6.3 Operating Characteristics and Discussion
Essentially a Manatee on steroids. As in the case of her smaller sister, an incredible amount of living space for her length.
Approximate price range of used boats: $330K to $500K