| Dimensions | |
| overall length with rotors turning | 22.15 metres |
| fuselage length | 17.02 metres |
| length with rotor blades and tail folded | 14.40 metres |
| Height | 5.13 metres |
| diameter main rotor | 18.9 metres |
| diameter tail rotor | 3.16 metres |
| Weight | |
| maximum take-off weight | 9,750 kg |
| antisubmarine has helicopter | 7,300 kg |
| airborne early warning aew helicopter | 7,400 kg |
| search and rescue sar helicopter | 6,000 kg |
| Performance | |
| vne never exceed speed | 270 km/hour |
| cruise speed | 200 km/hour |
| maximum vertical rate of climb | 240 metres/minute |
| Range | 1,480 km |
| range with auxiliary fuel | 1,740 km |
| royal air force sea king Mark3A | racal ari 5955/2 lightweight radar |
| | racal navigation system RNAV-2 |
| | racal doppler 91 |
| | global positioning system cossor STR2000 |
| | Bendix/king kdm 706A |
| | Bendix/king kdf 806 |
| | night vision goggles compatible Lighting |
| | smiths newmark afcs SN500 |
| | main gear box emergency lubrication System, ELS |
| royal australian navy sea king mark 50 | racal ari 5955/2 lightweight radar |
| | racal navigation system RNS252 |
| | racal doppler 91 |
| | adf Bendix/king kdf 806A |
| | tacan AN/arn 118 |
| belgian air force sea king mark 48B | radar bendix rdr 1500B |
| | racal navigation system RNS252 |
| | flir systems inc flir 2000F |
| | racal navigation system RNS252 |
| | global positioning system (GPS) canadian marconi CMA3012 |
| | main gear box emergency lubrication system (ELS) |
| norwegian air force sea king mark 43B | telephonics radar rdr 1500b dorsal mounted |
| | telephonics radar rdr 1300 nose mounted |
| | flir systems inc flir 2000F |
| | dual vdu screens with switchable displays |
| | cockpit screen displays for RDR1300 or FLIR |
| | racal doppler 91 |
| | racal navigation system RNAV-2 |
| | main gearbox emergency lubrication system, ELS |
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