Anchor and Anchor Cable Losses PDF
Preview Anchor and Anchor Cable Losses
Anchor and Anchor Cable Losses Athens, Greece, 2nd February 2018 Capt. Simon Rapley Anchor Loses ■ Items lost: ■ Whole anchors ■ Anchor crowns ■ Anchor and shackles of cable ■ Anchor and entire anchor cable Shank Fluke Crown P&I Claims Statistics ■ In a 12 month period ■ 12 Lost anchor cases notified to the Club ■ Total cost: USD 250,000, many cases still ongoing, so total cost may increase ■ 2 claims each just over USD 80,000 P&I Costs ■ P&I costs that may be incurred include: ■ Searching for anchor and / or cable ■ Recovering anchor and / or cable from designated anchorages ■ Fines that may be imposed by the local authorities ■ Vessel may require an additional escort tug due to the loss of anchoring capability (especially for river passages). Tug may also be required to standby while vessel at berth ■ Vessel may be detained while financial security for the above is arranged ■ Cost of new anchor and cable, supply and fitting, off-hire etc. are additional costs Why are Anchors / Cables Lost? ■ Unsuitable weather conditions ■ Whist waiting for a pilot into Rotterdam a products tanker lost 6 shackles of cable and an anchor after attempting to anchor in gale force winds. A VLCC lost the crowns off both anchors in quick succession when both anchor pins failed after the vessel repeatedly attempted to anchor in winds guesting to force 8 while waiting to berth at Ras Tanuara Why are Anchors / Cables Lost? ■ Excessive speed over the ground when anchor let go ■ A capesize bulk carrier was proceeding along a narrow channel to a port in China when the vessel suffered a blackout due to the sea-chests becoming choked with fish. In order to prevent the vessel running aground on a nearby island the anchor was dropped at the behest of the pilot whilst the vessel was still proceeding at 7.0 knots over the ground. The anchor and the entire cable of 9 shackles were lost due to the excessive anchoring speed ■ Excessive water depth ■ A handymax bulk carrier was scheduled to call off a port in the United Arab Emirates in order to receive bunkers, stores and effect a crew change. The anchor and all 11 shackles of cable were lost due to the excessive depth at the chosen anchor position. The anchor and cable were eventually recovered from a water depth of 150m Why are Anchors / Cables Lost? ■ Brake banding wear down ■ An anchor and entire anchor cable were lost when a Panamax bulk carrier attempted to anchor in the Mississippi river. The anchor had been walked back and was let go from just above the waterline into water of limited depth. As the cable paid out the crew on the forecastle were unable to check the cable using the windlass brake with the result that the entire cable paid out and detached itself from the bitter end. It was found that the brake lining on the windlass was excessively worn Why are Anchors / Cables Lost? ■ Excessive Cable Diminution (wear down) ■ Normally anchoring whilst proceeding at 1.0 knot would be considered acceptable, however, a panamax bulk carrier lost an anchor and 5 and a half shackles of cable after dropping her starboard anchor at this speed in only 28 meters of water. In this case the anchor cable was subsequently found to be suffering from severe diminution in places and a link had failed mid-shackle as the weight came on the cable Why are Anchors / Cables Lost? ■ Joining Shackle Failure ■ A panamax bulk carrier lost an anchor whist heaving anchor in the Mississippi river. An examination of the recovered chain end indicated that the loss was most probably due to the anchor joining shackle having not been properly secured to the anchor ■ Dropping an anchor on a rocky seabed ■ Crowns and flukes can be damaged when dropped or fouled on rocks Actions if Anchor / Cable is Lost ■ Obtain an accurate position where the anchor / cable were lost, consider the relative position of the hawse pipe in relation to the location from which the position was obtained – radar scanner, GPS antenna etc. ■ Record the direction in which the cable was laying ■ Record the weight and type of anchor, and its serial number ■ Record the bar diameter, length and weight of the anchor cable ■ Advise your owners, local authorities, P&I Club / P&I Club Correspondent, Classification Society and H & M Insurer. A report may be required to the Coast Guard / local authorities
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