Page 39: of Maritime Reporter Magazine (March 1973)

Rudolph Matzer Designs

First Of A New Class Of

Oceanographic Vessels

A new all-steel research vessel is the first of a new class of oceanographic ships to be built and equipped from the keel up for her mission of deepsea research.

Built in sections from 345 tons of ABS-in- spected steel plate supplied by Republic Steel

Corporation, the new vessel boasts a number of firsts. It is the first new research ship to be completed under a program to replace the old, outmoded ships which currently constitute nearly half the academic oceanographic fleet. It is one of the first to discard the conventional chine hull "mudboat" concept used in research vessels in favor of a sleek molded hull designed specifically for oceanographic research. It is the first to make extensive use of open decks, and the first to be completed under the aegis of the National Science Foundation.

The new $1.4-million vessel is named for the late physical oceanographer Columbus Iselin, who twice served as director of Woods Hole

Oceanographic Institution, and was well-known for his contribution to understanding the cir-

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BRONXVILLE, NEW YORK 10708 914/961-7048 culation of the North Atlantic Ocean. The ship, will be operated by the University of Miami's

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Science in cooperation with the University Na- tional Oceanographic Laboratory System (UNOLS).

The vessel was designed by Rudolph F.

Matzer and Associates, naval architects and engineers and built by Bellinger Shipyards,

Inc., both of Jacksonville, Fla. According to

Rudolph Matzer, who heads the design firm, "The Iselin's molded hull makes the ship more seaworthy and maneuverable, and it can be driven faster with less horsepower."

The $1.4-million R/V Columbus Iselin, shown at dock- side in the Bellinger Shipyards, Jacksonville, Fla. Forty- foot-long steel plates, supplied by Republic Steel's Gads- den, Ala., mill, were used for its construction and in the making of the molded hull.

Principal dimensions of the new vessel are 170-foot overall length, 36-foot beam, and 15- foot molded depth. Forty-foot-long steel plates •Hs-inch thick were used for its construction and in the making of the molded hull. Designed for a cruising speed of 14.5 knots, the Iselin is propelled by twin Caterpillar D-398A diesel main engines connected to variable-pitch pro- pellers.

The ship is able to remain at sea for 35 days without reprovisioning. It carries a crew of 12 and a scientific staff of 13.

Tank capacity is provided for 60,000 gallons of fuel and 8,500 gallons of fresh water, supple- mented by twin Maxim HJ-20 salt evaporator units. Electrical power is supplied from twin

GM Detroit Diesel 150-kw generator sets. The vessel is completely air-conditioned. Labora- tory space of 1,075 square feet adjoins an open main deck aft, which provides a 2,000-square- foot platform for scientific operations at sea.

Two hydraulic cranes, two hydraulic A-Frames and stern ramp are located on the main deck to facilitate handling of scientific equipment.

A main trawl winch and two hydrographic winches are located on the upper deck and op- erate in conjunction with the two A-Frames.

An aft control tower located on the starboard side, overlooking the main deck, enables the vessel and any of its winches to be operated from a central vantage point when in a work- ing mode.

Electronic equipment includes twin radar units, single side-band, AM, VHF radio, preci- sion echosounders, depth sounder, Sperry Gyro system, Omega Navigation system, RDF and loran.

The Iselin will be equipped for a wide range of oceanographic operations, including trawl- ing for biological specimens coring for deep- sea sediments, dredging for rocks, echosound- ing, seismic refraction measurements, and sam- pling the physical and chemical parameters of the ocean.

In air-conditioned laboratories, researchers will 'be able to carry out preliminary analyses of collected samples and specimens while at sea. A conference room will also be provided for scientific personnel aboard.

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March 1, 1973 47