Justin T. Rogers
(continued from page 36)
of 47.8 feet, and a depth of 12 feet.
Operating draft is just over 9 feet.
Midland's decision to build
heavy-fuel boats was based purely
on economics. The price and avail-
ability of fuels are two major fac-
tors in moving cargo competi-
tively. Midland operates the Rogers
on the lower Mississippi River be-
tween Cairo, 111., and New Orle-
ans. The new vessel is used to
transport coal, grain, and other
dry bulk commodities.
KALVIK/TERRY FOX
Burrard Yarrows
Burrard Yarrows Corporation
headquartered in North Vancou-
ver, B.C., Canada's biggest West
Coast shipbuilder, in 1983 deliv-
ered two identical icebreaking,
anchor-handling/tug-supply ves-
sels to Gulf Canada Resources Inc.
of Calgary, Alberta. Named Kal-
vik and Terry Fox, these vessels
are reported to be the most pow-
erful of their type in the free
world. Kavlik was built at Bur-
rard's Victoria Division on Van-
couver Island and the Terry Fox
was built at the Vancouver Divi-
sion in North Vancouver. Design
and supervision of construction
was carried out by naval archi-
tects German & Milne Inc. of
Montreal.
The 2,200-dwt vessels have an
overall length of 288.7 feet, beam
of 57.4 feet, depth of 32.8 feet, and
operating draft of 26.25 feet. They
carry crews of 18 persons and are
designed for optimum performance
in both open and ice-covered wa-
ters.
Each vessel is powered by twin
TM510 Stork Werkspoor diesels
with a total output of 23,200 bhp,
HL & WATER—
System capacities range from 39 to 1,320 GPH
Our Microphor/Taiko Oily Water Separators use state-
of-the-art technology to separate oil from bilge water.
Compact, easily-installed devices utilize straight co-
alescing method to remove oil. Separation is by grav-
ity through a series of chambers. Low purchase price,
minimum maintenance and economical operation mean
our oily water separators are your best buy. Corrosion,
oxidation resistant. Longer service life. Eliminate
scheduled filter changes. Exceed IMO and USCG dis-
charge requirements.
MCROPHOR
Microphor, Inc.
P.O. Box 490
Willits, CA 95490
Telephone: 707/459-5563
Telex: 330470
Forest Lodge West,
Fawley Road Hythe,
Southampton, S046ZZ England
Telephone: 703/843178
Telex: 477580 HOVCON G
Microphor" is a registered trademark (or certain products manufactured by Microphor. Inc , Willits. California
Subsidiary ot the Harrow Corporation
driving through Lohmann & Stol-
terfoht single-reduction gearboxes
to open, controllable-pitch Lips
propellers. A 1,000-kw generator
is clutched off each gearbox; in the
icebreaking mode, these genera-
tors are dedicated to driving the
Wartsila air bubbler system. Main
engine controls are by ASEA.
Ship's service electric power is
provided by two 750-kw ac gener-
ators driven by Caterpillar diesels.
A 200-kw emergency generator is
also installed.
In addition to the large center-
line rudder, steering is assisted by
a 500-hp stern thruster supplied
by Maritime Industries. The air
bubbler system also functions as a
bow thruster. A special coating,
Inerta 160, covers the hull up to
the main deck, protecting the hull
and reducing hull-ice friction.
Particular attention has been
given to the form of the forward
part of the vessels to prevent ice
from flowing under the hull and
being ingested into the propellers.
In addition, the bow design has
been developed to maximize both
level ice and ridge ice penetration
performance. Special attention has
been given to directional stability
in the ice-ramming mode.
The hull is of double chine form
and incorporates a semi-spoon bow,
forward ice plow, and raked tran-
som stern. A double skin arrange-
ment provides both protection and
the ability to operate at a constant
draft by adjustment of the quan-
tity of ballast in relation to quan-
tites of fuel, cargo, etc. being
carried.
To simplify construction, the hull
is of fully developable form. This is
particularly advantageous as the
shell plating and hull support
structure are of EH36 modified
special quality steel.
A sophisticated towing and an-
chor-handling system has equip-
ment arranged under cover for
protection from Arctic weather.
The towing system includes an
80-ton Van der Giessen towing
winch and a friction brake capable
of up to 390 tons of holding power.
Anchor handling will be carried
out with a double-drum, waterfall
type winch, each drum capable of
200 tons pull.
The Kalvik and Terry Fox have
been built to the highest class of
Lloyd's Register of Shipping and
to the Arctic Shipping Pollution
Prevention Regulations for an
Arctic Class 4 vessel, all to the ap-
proval of the Canadian Coast
Guard.
KALVIK/TERRY FOX
Major Suppliers
Main engines (2) Stork Werkspoor
Reduction gears (2) Lohmann &
Stolterfoht
Propellers (2) Lips
Engine controls ASEA
Steering, autopilot Wagner
Stern thruster Maritime Industries
Bubbler system Wartsila
Generator engines Caterpillar
Pumps Pumps & Power
Winches Van der Giessen
Radar Decca
Satnav Marinav
Doppler log, gyrocompass Sperry
NAVASOTA
Patti Shipbuilding
Patti Shipbuilding of Pensacola,
Fla., in early 1983 delivered the
100-foot oceangoing tug Navasota
to Brazosport Towing Company of
Freeport, Texas. Classed +A1 +
AMS Loadline, All Ocean Towing
Service by the American Bureau
of Shipping, the new vessel brings
to 14 boats owned and operated by
Brazosport Towing in coastal and
international service.
The Navasota is powered by
twin Caterpillar D-399 diesels, each
with a rated output of 1,125 bhp at
1,225 rpm, driving through Reintjes
WAV 1400 4.95:1 reduction gears
to Columbian 82- by 84-inch stain-
less steel propellers installed in
Kort nozzles. The vessel recorded
an impressive 13 knots on sea
trials.
Electric power is supplied by
two 55-kw generators driven by
Caterpillar diesels. The main elec-
trical panel was provided by Con-
Select. Other equipment includes
two Ingersoll Rand 242 air com-
pressors with 80-gallon receivers,
Racor 75-1000 fuel filters, Custom
Hydraulic steering system with
Mathers AD 12 air controls and
SB 22 shaft brakes, a Gould fuel
transfer pump with meter, two
Gould bilge pumps, two Peabody
Barnes fresh water pump systems,
a Walker Electric Service alarm
system, SSI Nav/Lite panel, Mc-
Elroy anchor winch, and Smatco
46/34 DAW 100 towing winch.
Electronics include one 64-mile
Si-Tex radar, a 24-mile Si-Tex ra-
dar, Plath Navigator Vlll autopi-
lot, two Horizon 78 VHF radios,
Raytheon Ray 350 loudhailer, Si-
Tex 757 Loran C, Motorola Triton
40 SSB radio with Necode digital
encoder/decoder, Magnavox satel-
lite navigator, and Benmar RDF.
The Navasota's interior outfit
has been constructed to a high
standard, including mahogany trim
in the pilothouse, staterooms, and
galley as well as custom-built
mahogany tables, desks, and
cabinets. General workmanship
throughout the vessel reflects this
same high quality and attention to
detail.
(continued on page 40)
12
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