IACS UR S27.pdfVIP

STRENGTH REQUIREMENTS FOR FORE DECK FITTINGS AND EQUIPMENT 1. General 1.1 This UR S 27 provides strength requirements to resist green sea forces for the following items located within the forward quarter length: air pipes, ventilator pipes and their closing devices, the securing of windlasses. 1.2 For windlasses, these requirements are additional to those appertaining to the anchor and chain performance criteria of each Society. 1.3 Where mooring winches are integral with the anchor windlass, they are to be considered as part of the windlass. 2. Application 2.1 For ships that are contracted for construction on or after 1January 2004 on the exposed deck over the forward 0.25L, applicable to: All ship types of sea going service of length 80 m or more, where the height of the exposed deck in way of the item is less than 0.1L or 22 m above the summer load waterline, whichever is the lesser. 2.2 For ships that are contracted for construction prior to 1January 2004 only for air pipes, ventilator pipes and their closing devices on the exposed deck serving spaces forward of the collision bulkhead, and to spaces which extend over this line aft-wards, applicable to: Bulk carriers, ore carriers, and combination carriers (as defined in UR Z11) and general dry cargo ships (excluding container vessels, vehicle carriers, Ro-Ro ships and woodchip carriers), of length100m or more. 2.3 The ship length L is as defined in UR S2. 3. Implementation 3.1 Ships that are described in paragraph 2.1 that are contracted for construction on or after 1 January 2004 are to comply by the time of delivery. 3.2 Ships described in paragraph 2.2 that are contracted for construction prior to 1 January 2004 are to comply: i) for ships which will be 15 years of age or more on 1 January 2004 by the due date of the first intermediate or special survey after that date; ii) for ships which will be 10 years of age or more on 1 January 2004 by the due date of the first special survey after that date;