Annexes - Marine Accident Investigation Branch
Annexes - Marine Accident Investigation Branch
Annexes - Marine Accident Investigation Branch
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LABORATORY REPORT<br />
EXAMINATION OF A FRACTURED AXIAL DISPLACEMENT<br />
HYDRAULIC MOTOR CYLINDER BLOCK AND ASSOCIATED<br />
ITEMS FROM THE ANCHOR WINDLASS OF<br />
MT STELLAR VOYAGER<br />
For: <strong>Marine</strong> <strong>Accident</strong> <strong>Investigation</strong> <strong>Branch</strong><br />
Mountbatten House<br />
Grosvenor Square<br />
Southampton<br />
SO15 2JU<br />
THE TEST HOUSE (CAMBRIDGE) LTD REFERENCE: T90996<br />
RECEIPT DATE: 1 JULY 2009<br />
RECEIPT DATE (CLIENTS INSTRUCTION): 3 JULY 2009<br />
REPORT DATE: 5 August 2009<br />
1. INTRODUCTION AND BACKGROUND<br />
Instructions to examine the fractured hydraulic cylinder block and<br />
associated items were received from <strong>Marine</strong> <strong>Accident</strong> <strong>Investigation</strong><br />
<strong>Branch</strong> (MAIB).<br />
The laboratory was provided with most of the fractured hydraulic motor<br />
cylinder block, parts of its fractured outer casing, the control lense, the<br />
output shaft, shaft roller bearings, planetary gear and a brake plate set.<br />
The hydraulic motor was reported to be from the forward deck mounted<br />
anchor windlass of MT STELLAR VOYAGER, which had failed<br />
catastrophically during operation.<br />
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