Recommended SWL, Load Position, Safety Factor …

1 BILLBOARDBACK TO CONTENTMOORING EQUIPMENTR ecommended SWL, load position , Safety Factor and Test LoadFittingSWLLoad position (Line position )SafetyFactoron YieldTestLoadNotesDouble BollardsPer ISO 3913 Single RopeMaximumLoading X Barrel Dia.(D) Above Base, X SWL Scantling must be as perISO loading when figure-of-eight belayed assumed tobe twice eye applies to figure-of-eight BollardsSingle Type:2 X AboveLoadDouble Type:Same X Barrel Dia.(D) Above Base, X SWL Scantling must be as perISO Loading when figure-of-eight belayed assumed tobe twice eye load . Closed ChocksMBL of oneline d/R = 1/4 IWRC WireRope with strengthif 1770 N/mm 2 Outboard Horizontal: 90 OVertical: Up 30O Down 90 OInboard Horizontal: 90 OVertical: X SWL d = Rope DiameterR = Chock Surface RadiusIf used for primary mooringline, MBL may be that ofactual associated Horizontal load = 2 XRope load . Pedestal Fairleads andRollers of Button-RollerChocks MBL ofone line:d/R = 1/4 IWRC WireRope with strengthof 1770 N/mm2180O wrap at upperend of cylindricalor conical part ofthroat (at center ofroller if radiusthroat) XSWL(=MBL)If used for primary mooringline, MBL may be that ofactual associated load on fitting is equalto twice the line load .

2 Universal Fairlead 4-Roller MBL ofone line:d/R = 1/4 IWRC WireRope with strengthof 1770 N/mm2 Outboard Horizontal: 90 OVertical: Up 30O Down 90 OInboard Horizontal: 30 OVertical: XSWLMBL = MBL of actualmooring line leads maycorrespond to actual leads towinch of line in aperture tobe assumed such as toproduce max. stress in highest position tocalculate stress in frame androller bearings; at mid-lengthof roller to calculate bendingin Customer SatisfactionP. 1 BILLBOARDBACK TO CONTENTMOORING EQUIPMENTR ecommended SWL, load position , Safety Factor and Test LoadFittingSWLLoad position (Line position )SafetyFactoron YieldTestLoadNotesUniversal Fairlead5-Roller MBL ofone line:d/R = 1/4 IWRC WireRope with strengthof 1770 N/mm2 Outboard Horizontal: 90 OVertical: Up 30O Down 90 OInboard Horizontal: 30 OVertical: XSWLMBL = MBL of actual line leads maycorrespond to actual leads towinch of line in aperture tobe assumed such as toproduce max.

3 Stress in highest position tocalculate stress in frame androller bearings; at mid-lengthof roller to calculate bendingin roller. Chain Stoppers orSmit Bracketsfor use at SPMs or forEmergency Towing(Ship over 20,000 DWT)Up to 350,000 DWT = 200 TOver 350,000 DWT = 250 TIn-line with to be marked on fittings required for allships over 150,000 DWTC hain = 4315 KNTowing = 3970 KN Mooring Winch Drum,Shafts, BearingsMBL ofmooring lineSplit Drums:On first Drums: First or top layer,whicheverproduces higheststress. refer standard winchsizes and rope Winch Brakes,Frames andFoundationsMBL of mooinglineSplit Drums:On first Drums: First or top layer,whicheverproduces higheststress. BS MA 93, Part Winch DriveComponentsStall loadNot applicable SeeRemarkSee ISO3730 andsection 7 Safety Factor + based onstall load ; or based onrated load ; whichever ishigher (per ISO 3730).Mooring LinesHighest loadcalculated foradoptedstandardenvironmentalcondition sNot s tsample todestructionconfirmMBLThe Safety factors for ropesquoted should only beapplied to primary mooringlines in combination with theSWL for Mooring LinesAs aboveNot applicablePolyester: above The Safety factors for ropesquoted should only beapplied to primary mooringlines in combination with theSWL :1.

4 SWL to be marked on or near the fittings in units of metric tons (Letter t ).2. The SWL of Foundations and Supporting Deck Structure must be specially considered when siting and rating thecapabilities of the fitting. In principle the strength of the supporting structure and connection of the fitting to it shouldbe greater than the fitting itself so that any failure does not result in damage to the ship s structure. Since foundationsand connections to the deck are often made in non-ideal conditions onboard the ship rather than factory condition,and to allow for possible resulting weld imperfections, it is Recommended that they be at least 10% stronger than Customer SatisfactionP. 2