Page 40: of Maritime Reporter Magazine (August 15, 1984)

Warship Design (continued from page 40) frigates of the Halifax Class. Three will be built by St. John Ship- building & Dry Dock Company (prime contractor with Sperry) in

St. John, New Brunswick, with three subcontracted to Marine In- dustree Ltd. in Sorel, Quebec. The other five ships will be named

Vancouver, Ville de Quebec, To- ronto, Regina, and Calgary. The lead ship Halifax is scheduled for commissioning in 1989.

The Halifax Class will have a displacement of 4,200 tons, overall length of about 440 feet, beam of 48 feet, and hull depth of 14 feet.

They will be powered by two Gen- eral Electric LM2500 20,000-shp gas turbines driving twin control- lable-pitch propellers. Contract speed is 29.2 knots; range is 4,500 nautical miles at 20 knots. They will have a total complement of 226.

Armament will include eight

Harpoon SSM missile launchers, a

Sea Sparrow SAM system, a 76- mm OTO Melera gun, four 324- mm MK 32 torpedo tubes, and two

Sea King helicopters.

French Corvettes

The French Navy, like the other two armed services, has pursued a policy of using indigenous equip- ment wherever possible, and this shows to good effect in the latest air defense ships. The hull of the successful anti-submarine destroy- ers of the Georges Leygues class, or C70 type corvette, has been adapted into the C70AA design, but with several major changes.

The ships are unusual among large warships in having an all- diesel propulsion system. Instead of the CODOG system in the C70 design, the C70AA has four SEMT-

Pieltick 18PA6 diesels, in which double-supercharging has been in- troduced to give an unusually high power:weight ratio. This also dis- penses with the massive air in- takes and exhaust trunking needed for gas turbines, and permits an economical use of deck space.

Although an American missile has been bought, the medium-range

Standard SM-1, with US Navy

SPG-51C tracker radars, the ship will use the French SENIT 6 data- processing system and a new

French DRBJ-11 phased-array surveillance radar. This radar is mounted in a spherical weather- proof dome on a short lattice tower positioned over the diesel ex- hausts, another unusual feature.

Four ships are planned, two to escort each of the two new nu- clear-powered carriers building, and the first destroyer is planned to come into service by late 1987.

The first two are building at the

Lorient navy yard in Brittany, and two more have been auth- orized.

Displacement: 4340 tons (full load)

Dimensions: 139.0m (oa)x 14.0m x 5.5m

Machinery: 2-shaft diesel (4 18PA6

BTC), 42,300hp

Speed: 30 knots

Armament: 1 Standard SM-1 SAM (40 missiles carried) 8 MM-40 Exocet SSMs 2 100mm Model '68 guns 2 20mm guns 2 torpedo-launchers for L5 ASW torpedoes

Aircraft: refuelling facilities for

Lynx helicopter

Range: 8200nm (a 17 knots

Sensors: DRBJ-11, DRBV-26,

SPG51C, DRBC-32D and Type 1226 radars

DUBA-25 sonar

Complement: 12 officers, 229 men

German Frigates

The Federal Republic of Ger- many's Bremen (F-207) Class (Type 122) frigate is an outstanding ex- ample of the pitfalls of interna- tional collaboration. Conceived originally as a NATO cooperative project for a joint European escort vessel, it ended up as a German adaptation of the Dutch Kortenaer

Class frigate.

Unfortunately, the Federal Ger- man Navy's role in protecting the

Baltic Approaches differs consider- ably from the Royal Netherlands

Navy's task of providing ocean es- cort in the Eastern Atlantic, and reconciling the 'Brown Water' re- quirements of one with the 'Blue

Water' role of the other proved very difficult. A great deal of time and money has been spent on redesigning the Dutch ship's CO-

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