2.2.4 Aiming circle (Touch down zone)
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.895 – Recommendation on Helicopter Landing Areas on Ro-Ro Passenger Ships – (Adopted on 4 February 1999) - Annex - Recommendation on Helicopter Landing Areas on Ro-Ro Passenger Ships - 2.2 Details of landing area - 2.2.4 Aiming circle (Touch down zone)

2.2.4 Aiming circle (Touch down zone)

  2.2.4.1 The aiming circle is an area concentric to the centre of the clear zone and has a diameter half that of the clear zone itself. A circle of some 10 m diameter is required for the aiming circle of a landing area suitable for the larger helicopters in normal marine use. The circle should accommodate with safety the landing gear of helicopters for which it is intended and should therefore, if possible, be completely obstruction-free. If there are unavoidable obstructions, they should have rounded edges capable of being traversed without damaging the landing gear of a helicopter, and should be no higher than 0.1 m.

  2.2.4.2 The aiming circle should be completely covered with a matt anti-slip surface painted in a dark non-reflecting colour which contrasts with the other deck surfaces. Its circumference should be marked with a yellow line 0.2 m wide, with the diameter in metres of the aiming circle clearly indicated in white figures at four points in the circumference line as shown in figures 1 and 2.

  2.2.4.3 The letter `H' should be painted at the centre of the aiming circle in 0.4 m wide white lines forming a letter of dimensions 3.6 x 1.8 m.

Parent topic: 2.2 Details of landing area
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