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Merchant Ships For The Seventies- (Continued from page 11) Bath Iron Works feels that the combina- tion ship, having both break-bulk and container capacity, will prove very useful for trades with developing countries. The Bath team proposed an ore/bulk/oil ves- sel, Saco Class, with a cargo capacity of 71,500 tons. Powered by a single-boiler 24,000-shp steam plant, a service speed of 17 knots was predicted. An option with this vessel is to have it produced as an ore/bulk ship. It can be lengthened by about 100 feet for greater ca- pacity. A variation of the Saco Class ship is the Machias Class tanker with a deadweight capac- ity of 75,000 tons. This class has the same bow and stern as the OBO ship but a tanker mid- body. The estimated price in lots of 20 of the Saco Class is $19.8 million and for the Machias Class tanker is $17.9 million. A ship that can go anywhere, including the St. Lawrence Seaway, is the fourth basic ship, the Kennebec Class. It is a diesel-powered ship designed for unattended operation, with a steam plant or gas-turbine plant as alternatives which has a service speed of over 16 knots. Flexibility was the key thought in the design of this 21,000-dwt ship. It can be used for dry bulk cargoes, containers, lumber, break-bulk, automobiles, etc. A wide variation in cargo gear is offered to suit most trades. The estimated cost of the basic ship is $11.9 mi Jion. Bath Iron Works Basic Ship Designs Standardization In order to reduce first costs, both design teams made many features standard for several ships. The bows and sterns on many Newport News Shipbuilding's ships are the same, power plants are duplicated and the deck house is standard for all ships. Bath Iron Works' design also uses the same bow and stern on several ships and the deck house is standard on all but the Kennebec Class. Power plants are interchangeable on many ships. c New Shipyards To provide the ships that are needed at the prices quoted, both shipyards proposed new facilities designed for the maximum of automa- tion. Newport News Shipbuilding estimated (Continued on next page) Figure t—Penobscot Cass (containership): Length bet. perpendiculars-720 feet; beam-102 feet; depth 54 feet 9 inches: draft 31 feet 6 inches; containers-1,468; speed-23.4 knots. a " I 11 I II 1 »I I I I I II I II I M 1 11 i u i II i M I I ITTTT-1 I I » 1 LLU l-'igure 9—Merrimcc C'ass (containership): Length bet. perpendiculars-550 feet; beam-86 feet; depth 54 feet 9 inches; draft 31 feet 6 inches; containers-666; speed-211/4 knots. HA N \J i:l ri I M 111 i I RI 1111 111 I 111111111 I N 11 > I M I I ri 1111111 I ri i II 111 N FI gq-1 1 Figure 10—Saco Class (OBO): Length bet. perpendiculars-775 feet; beam-105 feet 6 inches; depth-62 feet 6 inches; draft-45 feet 8 in.; deadweight-71,550 tons; speed-17 knots. Figure 1 1—Kennebec Class (multi-purpose): Length bet. perpendiculars-541 feet; beam-75 feet; depth-45 feet; draft-32 feet 4 inches; deadweight-21,280 tons; speed-16 knots. June 15, 1970 3
