Figure D7.
HH-60J helicopter (USCG Air Station Astoria) retrieving buoyant
line and trailing float from surface with a grapnel at sta OS 5
(30 May 2001)
and the free end placed manually on the cargo hook by means of the reach
pennant. At that point the load was lifted and returned to base at Ocean Shores
airport. The load limiter system was designed as a safety measure to prevent
dynamic or static loads from exceeding the design strength (4,000 pounds) of the
mooring assembly. This was the case for jetty tripod sta OS 7, which had been
deeply buried by sediment. Upon recovery attempt, the load limiters parted. A
diver reconnaissance confirmed that sta OS 7 was buried in more than 4 ft of
sediment. The instrument pods were deployed and recovered at high tide near
slack to avoid any unnecessary drag on the moorings during deployment and
recovery.
moving vessel to characterize the spatial variation in circulation around the north
jetty and inside the harbor entrance during a flood tide in May and September
2001. Approximately 1,500-m-long transects were run parallel to the jetty on the
north and south sides, and perpendicular to the jetty, covering the north portion
of the inlet and area of the submerged portion of the jetty in May 2001
(Figure D8). Currents were measured along three sets of transect loops (A, B, C)
in the inlet during 2 days of measurements in September 2001. Loop A ran
perpendicular to the north and south jetties, out to midchannel near Damon Point
and back to its origin to complete a large triangle transect. Loop B shared the
same origin of Loop A near the south jetty and traversed a smaller triangle, inset
of Loop A. Loop C continued further into Grays Harbor, near the Westport
Marina and inside of Damon Point (Figure D9).
D11
Appendix D Field Data Collection
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