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Merchant Ships For The Seventies- (Continued from page 9) Two hull options are offered. Using the same bow and stern but a new midbody with the same mo.ded dimensions provides a 72,000-dwt tanker. Another alternate is to provide a de- sign strictly for dry bulk trade. In addition to the hull options, there are various machinery options including a 24,000-shp industrial gas turbine. The estimated cost of this ship in lots of ten is $21.4 million. A containership, the Vanguard Class, pro- vides for the carriage of 1,540 twenty-foot con- tainers. The ship is designed with a single- screw 35,000-shp steam-turbine propulsion plant, which gives a service speed of 23.3 knots. Two options are provided utilizing the bow and stern sections and modifying the arrange- ment of the cargo hold. Conversion of Holds 3, 4, and 5 into a new midbody section results in a combination ro 1-on/roll-off/containership. With modifications to Holds 1, 2 and 6, a break-bulk/containership option is available. Various options are available for outfitting and machinery including a lower-powered pro- pulsion plant. The estimated cost of this ship in lots of ten is $19.0 million. The third ship offered is a 120,000-dwt tank- er, the Voyager Class. It is powered by a 24,- 000-shp steam-turbine propulsion plant which gives a sea speed of about 15.5 knots. It can also be built as an ore/oil carrier and with machinery variations. The estimated cost of this ship in lots of ten is $25.0 million. The Nomad Class, the fourth basic ship, is a modest sized multi-purpose ship which can carry about 27,000 tons of cargo. The basic ship is proposed with a 12,500-shp industrial gas-turbine power plant geared to a controllable reversible pitch propeller. This plant gives a speed of about 16.6 knots. Two options provide for a general cargo ship or a tanker. The estimated cost of this ship in lots of ten is $12.0 mi'lion. Ship Types—Bath Iron Works To satisfy the liner and contract trades, Bath Iron Works showed four basic ship designs but divided into six classes named after New England rivers. From these, a total of 22 op- tions are offered. The basic Bath Iron Works designs are shown in Figures 8, 9, 10, and 11. The Penobscot Class, large containership, can carry 1,468 twenty-foot containers. It is powered by a 40,000-shp steam turbine plant which provides a service speed of 23.4 knots. Two options are available for this class: it can be lengthened so that a total of 1,636 con- tainers can be carried, or it can have a stern ramp installed for carrying roll-on/roll-off car- go on the weather deck. The estimated cost of this ship in lots of 20 is $18.8 million. The second ship proposed is also a contain- ership, called the Merrimac Class. It was de- signed in conjunction with a break-bulk design, the Allagash Class. Either ship is convertible to the other without structural modifications to the hull. The Merrimac Class can carry 666 twenty-foot containers. I+ is a self-contained ship with its own container-handling equip- ment. It is designed with a single-boiler 24,- 090-shp steam-turbine power plant which will give a service speed of 21.3 knots. Space is provided for the installation of two boilers if desired. The estimated cost of this ship in lots of 20 is $16.2 million. As a break-bulk vessel, the estimated cost is $16.4 million. (Continued on page 13) Newport News Shipbuilding's Basic Ship Designs FORECASTLE SPACE CHAIN LOCKER Figure 4—Crescent Class (OBO): Length bet. perpendiculars-827 feet; beam-106 feet; depth-60 feet; draft-44 feet 3 inches; cargo deadweight-69,520 tons, speed-17.3 knots. STEERING GEAR ROOM & ELECTRO-HYDRAULIC MACHINERY SPACE AFT PEAK TANK (SWB) BOATSWAINS STORES & ELECTRO-HYDRAULIC MACHINERY SPACE ""lO 20 30" 40 50 60 70~ 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 Figure b—Vanguard Class (containership): Length bet. perpendiculars-685 feet; beam-103 feet; depth-60 feet; draft-29 feet 6 inches; containers-1,540; speed-23.3 Knots. 20 30 40 SO 607 1 FF 140 150 160 170 Figure 6—Voyager Class (tanker): Length bet. perpendiculars-900 feet; beam-147 feet 6 inches; depth-63 feet 6 in.; draft-48 feet 6 in.; cargo-1 20,200 dwt; speed-15.5 knots. , STEERING 1ST PLATFORM \ GEAR ROOM AfT PEAK TANK (SWB) I TOP OF HOUSE I NAVIGATING BRIDGE ENGINE ROOM UPPER MACHINERY LEVEL LOWER MACHINERY LEVET" 30 y1 (SWB) -D LEVEL C LEVEL WING TANKS. NO. 4 P/S (SWB)' CARGO HOLD NO. 7 40 50 | 60 IB TANKS.NO. 4 P/S (FO) WING TANKSN^/NO. 3 P/S" (SWB) - CARGO HOLD NO. 6 —' IR CARGO HOLD NO. 5 J\_/NO. 2 p/s~-_WING TANKSN^/NO. 2 P/S - (SWB), CARGO HOLD NO. 4 CARGO HOLD NO. 3 _WING TANKS\_/NO. I P/S CARGO HOLD NO. 2 :s NO. 1 90 | 100 IB TANKS NO. 3 PA (SWB)' 110 | 120 130 | 140 IB TANKS NO. 2 P/S (SWB)' 150 | 140 170 [ 180 IB TANKS NO. 1 P/S (SWB) - - * f '0 I 180 Figure 7—Nomad Class (multi-purpose): Length bet. perpendiculars-547 feet; beam-87 feet; depth-48 feet; draft 35 feet 3 inches; cargo-26,700 dwt; speed-16.6 knots. June 15, 1970 11
