Schleswig-Holstein/SY Mahdi: A Case Of Light And Shadow

 Accident, Accident report, collision  Comments Off on Schleswig-Holstein/SY Mahdi: A Case Of Light And Shadow
Feb 222011
 

Schleswig-Holstein lightly scratched

Germany’s BSU report on the collision between the ro-ro ferry Schleswig-Holstein and the sailing yacht Mahdi in calm, clear conditions highlights the fact that at night navigation lights are effectively point-sources and  they can deceive the unwary. Often, by the time someone realises that a collision is imminent it’s too late to react.

As the BSU analysis says: Looked at superficially, the collision was purely the result of inadequate monitoring of the sea-room as defined in
COLREG Rule 5 by the bridge crew of the Schleswig-Holstein and consequent non-observance of right of way by the ferry. However, such an assessment of the situation is most certainly too simplistic. Continue reading »

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Sichem Osprey: Athol Story of Pirate Island, Clouded Judgement And Coffee Grounds

 Accident, Accident report, grounding  Comments Off on Sichem Osprey: Athol Story of Pirate Island, Clouded Judgement And Coffee Grounds
Oct 302010
 
image

Not a pleasing view from the bridg of Sichem Osprey

Mistaken identification of a radar-prominent island, inadequately programmed radar alarms and lack of cross-control on the bridge led to the grounding of the 170 metre chemical tanker Sichem Osprey at 16 knots as the Officer of the Watch sipped his second coffee of the day.

Clipperton Island is a low-lying uninhabited nine-square-kilometre coral atoll owned by France in the eastern Pacific Ocean. It is for John Clipperton, a pirate who made it his hideout early in the 18th century.

Although the island has no lighthouse, racon or buoyage system it does have a pronounced radar signature at a 14 nautical miles.  Scattered showers had been observed on an earlier watch and the target was assumed to be a rain cloud and deselected.

Continue reading »

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NI Book Ready for AIS,Radar Integration

 Nautical Institute  Comments Off on NI Book Ready for AIS,Radar Integration
Jul 172008
 

From the 1st July 2008, all new radars required mandatory AIS integration to display the two completely separate systems on the same display. To coincide with the new rules the Nautical Institute had launched a new guide, “Radar and AIS”, as the first of its series on integrate bridge systems.

Written by Dr. Andy Norris, Radar and AIS builds on the basic radar theory and target tracking knowledge that seagoing officers already have while looking ahead to new technology radars with provide significantly enhanced performance. The guide argues that mariners will be better equipped with AIS integrated into radar displays, and that AIS has an ever expanding role to play in improving navigational integrity and accuracy. Increasing use of real and virtual aids to navigation will improve the information available to the mariner.

Says ther Nautical Instute: “It is important to stress, however, that in order to take best advantage of such new technology, we need to communicate the shift in culture these new integrated systems bring, and of the importance of managing the change onboard ships effectively. While much effort has gone into ensuring the AIS, radar and chart information is consistent, with uniform symbols and a standard resolution, operators still need guidance and instruction.

The book is to be formally launched on Thursday 24th July at the Inmarsat Building, it will then be sold for £20 from The Nautical Institute, www.nautinst.org. Members of the NI and Royal Institute of Navigation offered a 30% discount, while bulk discounts are also available.

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