From 'Coastguarder - Sea Search Specialist', Air International, February 1978, pp. 59-65 :-
"HS.748 Coastguarder Specification
Power Plant: Two Rolls-Royce Dart RDa7 Mk 535-2 turboprops each rated at 2,280 total ehp for take-off, driving
Dowty-Rotol four-bladed constant-speed fully-feathering and reversing propellers, diameter 12 ft 0 in (3,66 m).
Fuel capacity,2,210 Imp gaF (100471) in integral wing and centre-section tanks;water methanol capacity 60 Imp gal (272 I) in two tanks in wingroot fillets.
Performance: Max cruise (at 40,000 lb/18 145 kg weight), 278mph (448 km/h); initial rate of climb (at 40,000 lb/l8 145 kg weight), 1,320 ft/mm (6,7 m/sec); service ceiling, 25.000 ft (7620
m), take-off distance to 50 ft (15,2 m), military standards at normal max take-off weight at sea level, 3,080 ft (939 m) in ISA and 3,450 ft (1 052 m) in ISA + 20 deg C; landing field length from
50 ft (15,2 m), military standards at normal max landing weight at sea level, 1,880 ft (573 m) at ISA and 1,980 ft (604 m) at ISA + 20 deg C; time on station, normal take-off weight, 20 per
cent reserves, 6 hours at 1,000 ft (305 m) at 400 mIs (740 km) from base, 5 hrs at 10,000 ft (3050 m) at 690 mIs (1110 km) from base; range with 10,500 lb (4767 kg) payload, 20 per cent reserves, 1,100 mIs (I 770 km); max range, 2,600 mIs (4183km).
Weights: Typical prepared for service weight, 27,560-28,100 lb (12512-12757kg); max payload, 10,500 lb (4767 kg); max takeoff (normal), 46,500 lb (21 092 kg), (overload), 51,000 lb
(23 133 kg); max landing (normal), 43,000 lb (19504 kg), (overload), 47,500 lb (21 546 kg); max zero fuel weight (normal), 38,500 lb (17463 kg), (overload), 43,000 lb (19504 kg).
Dimensions: Span, 98 ft 6 in (30,02 m); length, 67 ft 0 in (20,42 m); height, 24 ft 10 in (7,58 m); wing area, 81075 sq ft (75,35 m2); undercarriage track, 24 ft 9 in (7,54 m); wheelbase, 20 ft 8 in (6,30m); cabin length, 46 ft 6 in (14,17 m); max cabin width, 8 ft I in (2.46 m); headroom, óft 4 in (1,92 m); internal volume, 1,990 cu ft (56,4 m3).
Accommodation: Basic crew complement of five; two pilots, one tactical navigator and two observer/dispatchers. Optional provision for routine navigator and for additional crew positions
and/or passenger seats at customer option."
cheers,
Robin.
