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A 'freight ship' (paragraph 1) is any sort of ship or...
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Real Life Accident: Anchor Damages Hull, Bow Thruster Compartment Flooded
November 27, 2015 byMarsreport
Recently , a f reight ship was underway in 15 foot seas
when the forepeak flood alarms activated. The crew
investigated and discovered the starboard anchor had slipped
10-15 links, causing it to strike and puncture the hull.
5 As a result, seawater flooded the bow thruster and
emergency fire pump compartment. The casualty resulted in
excess of $1 million in vessel damage and a month's lost
revenues while the vessel was out of Service undergoing
repair.
10 During the repair period, it was discovered that the
anchor windlass brake pad had worn down to 2-3mm thickness.
With only this amount of pad, the fully applied brake could
not achieve its designed holding power. The crew should have
recognised the excessive wear to the brake pads and that these
15 required replacement. It was also discovered that the anchor
involved in the incident was a replacement, and had different
specifications to the original anchor.
The replacement anchor's relative position in the hawse
pipe was not the same as the original, be cause the shank
20 length and connecting linkages were different. The size
difference prevented the riding pawl from properly engaging
the anchor chain. As an added safety device, a wire sling had
been used to secure the anchor while at sea. The wire sling
was threaded through a chain link and secured to the vessel
25 with a pelican hook.
When the sling broke and the brake failed, the anchor' s
weight and the ship's movement then caused it to drop before
the riding pawl could properly engage. The sling failure was
likely caused by the corrosion of the inner wire strands; the
30 inner wire strands being exposed to the elements because of
the sharp bend in the wire. Although the wire sling was
inspected regularly, those performing the inspections were not
instructed on how to examine and determine its serviceability,
35 Lessonslearned
- All preventative maintenance prograrames should be up to date
and include specific language on anchor windlass equipment,
particularly emphasising when brake assemblies must be renewed
or adjusted,
40 . When key vessei components, such as anchors, are to be
replaced, a proper review should be undertaken and all
possible variables consídered.
- Persons involved with vessei maintenance and repair should
have the technical resources available to them in order to
45 assist in determining serviceability or replacement of
shipboard equipment.
{Adaptedfrom:www.marineinsight.com)
A 'freight ship' (paragraph 1) is any sort of ship or vessel that carries cargo, goods, and materiais from one port to another.
Choose the option that DOES NOT serve the purpose of transportation.
A
Lash-vessel.
B
Bulk carrier.
C
Coaster.
D
Reefer.
E
Dredger.