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ACO Los
Reproducddbroil tional Archives
Q.
DUCTACTIETTED DER DOR
Pacific Southwest Region
Mavishk DRAPER JOLY, 25, 1994
NMATIONAL ARCHIVES
FROM ANTON SINISGRLLI To
DIANE §. NEON
REPOSITORYLAUZIC sod THWeNT REGION
HOLMES & NARVER, INC.
Engineers - Constructors
:
Tomic. EN,
COMMIS COLLECTION AE 3c¢ 470M"
cacy ms
BOX No. 22670 (#23) A/EY 326-658'750
TO:
John R. Kaiserman, Resident Manager
JOB: FOLgRR MAYER dD
FROM:
J. Paolozsi, Superintendent Marine Operations
RE:
1D No 1983
Marine Report-Nauru Island a
DATE: 27 July 1956
The information for this report was obtained while on Nauru Island, from July
23, 1956 to July 25, 1956, inclusive.
The island, in general, appears to be as shown on Hydrographic Office Chart —
#2179, i.e. size, height and navigational aids.
There are no offshore reefs or shoals, and it is safe for vessels to approach
the island in any-direction.
All harbor facilities are located in the South-
western Quadrant (180° to 270°).
Completely around the island there is a hard
coral shelf, approximately 200-300 feet from the high water mark to seaward, with
a possible average of about 100 feet in the vicinity of the cantilever crane.
Jetties #1 and 2 are concrete and stone construction and extend to the edge of
the shelf, These jetties were built to minimize wave and swell action in that
area, and they are not usable for boat landings.
The water depth over the shelf varies from practically dry at low (zero tide)
to tide heighth at any tide phase. The tidal range is about six feet. The
gradient of this shelf is about a one foot drop per 100 feet seaward. At the
edge of the shelf the sea bottom falls off sharply (45° to 60°),
About 150 feet
beyond the outer edge of the shelf the average depth is 150 fathoms.
There are four offshore, deep-water mooring buoys available. Two of these
mooring buoys are used for general cargo and passenger ships and are adjacent
to the boat harbor.
The other two are adjacent to the cantilever crane.
Two
additional buoys, directly under the cantilever crane, are used exclusively in
connection with the crane. The cantilever crane is not adaptable for general
cargo. It supports a conveyor belt for off-loading crushed phosphate only and
“has a water and fuel hose attachment for receiving water and fuel oil.
The boat harbor, which appears on the chart between Jetties #1 & 2, is a blasted
and dredged basin of concrete construction (saucer-like}.
The entrance to this
basin is about 30 feet wide. Several protruding rocks on either side were noted.
These cut the usable channel a few feet less than the estimated 30 feet, and for
planning purposes, a 28-foot channel should be planned. The controlling depth
in the boat channel at zero tide ia about forty-two inches (34 feet).
The main cargo handling equipment is an electric overhead gantry type (overhead
rails) with a 20 ton capacity. The limits of this crane are as follows:
a.
b.
ce.
d.
20 ton lifting capacity
20 foot reach
19 foot height over-all (including cargo and slings)
35 foot clearance between crane supports
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