Page 13 - WestlawnMasthead20_Dec11

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Designer Contacts:
Kurt A. Cerney:
Jon Ames:
Paulo Alv
de Souza:
Rodger Martin:
Three Nines:
27 ft. - 0 in. (8.23
25 ft. - 10 in. (7.87
8 ft. - 5 in. (2.56
Disp. (light) 2,650 lb. (1202 k
Draft (bd. Up)
10 in.
(25 c
Draft (bd’ down) 4 ft. - 6 in. (1.37
Sail Area:
330 sq.ft. (30.7 m
he builders of MagicFast Boats have retained you to determine the minimum engine-
compartment blower capacity for their new model, the Rocket X-32. A 32-foot express cruiser,
she’s to be equipped with twin 350-hp V8 gasoline engines. A conventional V-bottom boat, her engi
compartment is 8.2 feet long and 10.6-foot beam. Height, from the keel to the underside of the en-
gine-compartment overhead is 5 feet, and height from the chine up to the overhead is 3.9 feet. In a
dition to the two V8 engines, the engine compartment contains five 8D batteries plus a pair of wing
tanks, 170 gallons each. Also, there’s a 12-gallon water-heater and a 20-gallon black-water tank. Fi
nally, assorted other small machinery is mounted in the space, including the forward portion of the
exhaust runs, together amounting to about 4 cubic feet of volume. The Rocket X-32’s engine vents
fitted with louver grilles at their exits in the hull topsides, and 180-degree bends in the water-trap
boxes inside. They then run through 5 feet of duct hose to exhaust from low in the bilge. What is the
minimum acceptable engine-vent blower capacity?
Who Will Be The December 2011 Know It All Winner?
Email your answer to
Want to see how much you know? Want to show everyone else how much you know?
The first three people to submit the correct answer to the following question will win a
Westlawn tee shirt and cap, and will also receive a Know It All certificate. The answer
and winners to be published in the next issue of
The Masthead.