Quantcast Mooring Service Type

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b) winds in excess of 50 knots (COMNAVSEASYSCOM msg),
c) wind of 50 knots and current of 3 knots acting concurrently and
perpendicular to ship's centerline tending to push ship away from
pier (DDS 582-1),
d) gales, storms, hurricanes, and destructive weather
(COMNAVSEASYSCOM Standard Item 009-69).
6. Hurricane a tropical cyclonic storm with sustained winds speeds
greater than 64 knots.
7. Mooring - the system of lines, bitts, bollards, facility and fenders
used to secure a ship. Moorings include items such as fenders, camels,
lines, fittings, anchors, chain, structures, etc. The purpose of a
mooring is to safely secure a ship.
8. Mooring Service Type - design criteria for moorings are based on
risk of extreme events at each location in such a way that the risk of
an accident is extremely low, and yet the costs are realistic. The
longer a ship remains at a site and the more difficult it is to relocate,
the more stringent the design criteria. Table 3 summarizes the four
types of mooring service provided at DoD facilities, as defined in MIL-
HDBK-1026/4 'Mooring Design'. Ships experience all four types during
their service life with Types I & II being the most frequent.
9. Normal Weather winds less than 64 knots.
10. Safe Haven Also called a hurricane haven. Defined as a berth or
anchorage with sufficient strength and water depth to survive a storm
with winds greater than 64 knots but less than the maximum design
hurricane.
5
NFESC TR-6012-OCN Rev B
U.S. NAVY HEAVY WEATHER
MOORING SAFETY REQUIREMENTS





 


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