4.5.2 Masts and Spars and Standing Rigging

  4.5.2.1 Dimensions and construction materials of masts and spars and dimensions of standing rigging including connection to chain plates should be in accordance with the requirements or recommendations of one of the Classification Societies referred to in 4.3.1.1 or a recognised national or international standard.

  4.5.2.2 The associated structure for masts and spars (including chainplates, fittings, decks and floors) should be constructed to effectively carry and transmit the forces involved.

  4.5.2.3 Compliance with 4.5.2.1 and 4.5.2.2 should be confirmed by a design review and approval by one of the Classification Societies (e.g. Rig Design Certificate) which is assigned with the review of the rig.

  4.5.2.4 The Maintenance Manual provided by the mast manufacturer should be reviewed and approved by the Classification Society which is assigned to review the rig design.

  4.5.2.5 A physical survey on the rig stepping procedure and the rig behaviour during sea trials is to be carried out by or on behalf of the Classification Society that is involved with the classification of the vessel’s hull.

  4.5.2.6 Annual surveys on the vessel should include reviewing records and history of rig maintenance measures against the specifications provided by the maintenance manual.