Offshore Structure Platform Design - Offshore Structures: Design, Construction and Maintenance - page 202

TABLE 3.18 Helicopter weights, dimensions and D value for different types as per CAP437

Perimeter '' D '' Landing minimum

size, (m)

Type D value (m) marking Max weight (ton) '' t '' value Landing net size

Bolkow bo 105D 11.81 12 2.300 2.4t Not required -

Bolkow 117 13.00 13 2.300 3.2t Not required -

Augusta A109 13.05 13 2.600 2.6t Small 9 m × 99 m

Dauphin SA365N2 13.68 14 4.250 4.3t Small 99 m × 9m

Sikorsky S76B & C 16 16 5.307 5.3t Medium -

Bell 212 17.46 17 5.080 5.1t Not required -

Super Puma AS 332L2 19.50 20 9.300 9.3t Medium 12 m × 12 m

Super Puma AS 332L 18.70 19 8.599 8.6t Medium 12 m × 12 m

Bell 214ST 18.95 19 7.936 8.0t Medium 12 m × 12 m

Sikorsky S61N 22.20 22 9.298 9.3t Large 15 m × 15 m

EH101 22.80 23 14.600 14.6t Large 15 m × 15 m

Boeing BV234LR Chinook ** 30.18 30 21.315 21.31t Large 15 m × 15 m

Note: With a skid-fitted helicopter, the maximum height may be increased with ground-handling wheels fitted.
** Note: The BV234 is a tandem rotor helicopter and in accordance with ICAO the helicopter size is 0.9 of the helicopter D value, i.e., 27.16 m.