Page 30: of Maritime Reporter Magazine (April 1973)

CADSHIP Graphics Terminal

Cuts Costs Of Computer

Designed Ships' Hulls

CAD'COM, Inc., of Annapolis, Md., recently delivered the first of its unique CADSH.IP

Graphics Terminals to the U.S. Coast Guard.

CADSHIP is considered revolutionary because it is the first low-cost interactive computer graphics terminal designed specifically for the marine industry; it reduces the cost of ship design, while saving time and permitting the designer to investigate many more alternatives than ever before

CAD'SHIP is used to digitize the body plan of a ship hull and to transmit all of this in- formation into a computer for analysis and design. A designer simply traces lines from a drawing describing the hull geometry, receives a pictorial representation of his tracing on a

TV-like graphics display, and sends the data to a computer. The computer now "under- stands" the exact physical shape and form of the ship ind performs all of the standard hy- drostatic, structural, and stability calculations required to assess the integrity of the design.

The Coast Guard version of CADSHIP— officially designated "Ship Review System (SRS)"—is being used to review designs sub- mitted for certification by shipbuilders. The

SRS acts as a graphics input terminal to the

U.S. Navy's Ship Hull Characteristics Pro- gram (SH'CP), which is available on the

USCG's CDC-33QO computer. After the hull form is transmitted from SRS, the program computes the characteristics which a naval

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WEST END AVENUE, OYSTER BAY, NEW YORK, N.Y. 11771 • 212-895-8110 32 architect requires to analyze a ship design— hydrostatic properties, shear and bending mo- ment as functions of loading and assumed wave profile, floodable length, intact stability, and damage stability.

CADCOM's CADSHIP Graphics Terminal.

At a recent dedication ceremony of the Ship

Review System, Rear Adm. W.F. Rea III,

Chief of the Office of Merchant Marine Safety, stated that the system "enables a Coasit Guard naval architect to input a ship's offsets . . . and review the resulting bull characteristics in ap- proximately two hours." He noted thait prior to CADCOM's installation of the SRS, "the field offices had to wait about two weeks for receipt of data." Admiral Rea further stated that the computer costs have also been greatly reduced: "The average (computer) cost per ship review was $300, but now the cost has been reduced to below $100."

Dr. John C. Gebhardt, CADCOM's director of technology, announced that the design ver- sion erf CADSHIP is now available to the ma- rine industry, along with the SHCP program.

The system can be conneated to a customer's own computer or to a time-sharing service.

CADCOM's president, Dr. Charles O. Heller, stated that the CADSHIP Graphics Terminal is presently being marketed to the internation- al shipbuilding community, and discussions are in progress with various shipbuilders, naval architecture firms, classification societies, and

Government agencies.

For more detailed information write to:

CADOOM, Incorporated, 2024 West Street,

Annapolis, IMd. 21401.