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120

Sector 4. The Kiribati Islands to the Marshall Islands

ages, both of which are navigable. The E passage is best as it has been swept.

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Northeast Pass, about 7 miles NW of the E extremity of the

atoll, has been swept to a depth of 14.9m over a least width of about 135m.

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A pass, situated a little less than 1 mile NW, has a swept

depth of 14.9m over a least width of about 0.2 mile. It leads between the reef fringing Imrodj Island and that fringing Med- yado Island. Within the entrance, a narrow channel leads SW between numerous detached coral reefs into the lagoon, and a wider channel leads in a NW direction along the lagoon side of the atoll reef.

4.64

A pass, swept to a depth of 14.9m over a width of nearly 0.3

mile, leads between the reef fringing Kinadyeng Island (6°06'N., 169°38'E.) and the reef to the E. Within the pass it divides into three narrow channels, which then leads between numerous reefs into the lagoon.

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Southwest Pass, swept to a depth of 14.9m over a least width

of 135m. is suitable only for small vessels with local know- ledge. The pass is tortuous, and to be used under only the most favorable conditions. Such small vessels use this pass during periods of NE winds.

Most of the buoys cannot be relied upon as they are either missing or off station.

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Northeast Pass is unmarked, except for the cement found-

ation of a destroyed beacon on the W side of the channel and a black beacon with a rectangular topmark on the SE side of the channel. The former is visible at LW.

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Anchorage.—Winds from the N and W quadrants cause

choppy seas in the lagoon, but good anchorages over sand and coral is available for all classes of vessels. Good anchorages are reported throughout the E part of the lagoon and within all of the main passes. The areas close within these entrances are not suitable for anchorage, as they are exposed to wind and sea and have strong tidal currents.

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Jaluit Anchorage affords shelter from winds between NE and

SE, and is suitable for all classes of vessels. 4.65 Imieji Anchorage (6°00'N., 169°40'E.) has been

swept to 14.9m, with shoal spots swept to lesser depths, as indicated on the chart. Some of the numerous dangers in the approaches to this anchorage are buoyed, but they cannot be relied upon. Small vessels with local knowledge should only attempt to reach this anchorage, and then under the most favor- able of conditions.

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Directions.—Vessels bound for Jaluit Anchorage or for

Jabor should enter the lagoon by Southeast Pass unless per- mission has been obtained to enter by one of the other passes. The reef on the N side of the channel is readily identifiable, but the reef on the S side of the pass is somewhat more difficult to distinguish.

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Vessels entering, in order to avoid making too sharp a turn in

the channel, should favor the N side of the entrance by steering for the S extremity of Kabbenbock Island on a course of about 270°. This course leads about 0.1 mile S of the reef fringing Enybor Island. Then the course should be gradually altered, so as to pass in mid-channel through the S channel and to the anchorage.

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East Pass has depths of 5.5m, and is about 0.5 mile wide. It

has been swept to 5.2m over a least width of about 0.3 mile. A swell sets into the pass during NE winds.

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Berangu Passage is about 0.3 mile wide and has been swept

to a depth of 14.9m. On entering the lagoon, vessels using this pass must steer SE to avoid the reefs.

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Mezetchoku Passage is very deep and has been swept to a

depth of 14.9m over a least width of about 0.1 mile. Shoals lie close to the channel limits.

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Anchorage.—Large vessels can anchor, as convenient,

within the lagoon, in 29.2 to 54.9m, clear of the scattered shoals. The best anchorage is on the W side of the island next E of Bigatyelang Island (7°17'N., 168°43'E.), but even here the holding ground is coral the tidal currents are strong. The bot- tom slopes steeply about 0.1 mile outside this anchorage. The anchorage is sheltered from N and E winds.

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Jabwot Island (7°45'N., 168°59'E.), lying about 9 miles N

of the N extremity of Ailinglapalap Atoll, is about 0.8 mile in length, and is fringed with reefs. A 1968 report states that the fringing reef appears to drop off sharply within several hundred meters from 150 to 200m of the beach. A reef extends approx- imately 1 mile off the NW point of the island.

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In East Pass (7°18'N., 168°51'E.), the flood attains a rate of

1.5 knots and the ebb a rate of 1.75 knots. In Mezetchoku Passage (7°29'N., 168°44'E.), the flood attains a rate of 2 knots and the ebb a rate of 2.25 knots. In Begangu Passage (7°30'N., 168°40'E.), about 2.5 miles W of Mezetchoku Passage, the flood attains a rate of 0.75 knot and the ebb a rate of 1.5 to 1.75 knots.

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Depths—Limitations.—The main passes and the lagoon are

fairly deep, except for scattered shoals and coral heads. An irregular-shaped area connecting South Pass and East Pass with Berangu Passage and Mezetchoku Passage has been swept to 14.9m, with shoal spots swept to lesser depths. Shoals are readily seen under favorable conditions of light.

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There are eight passes leading into the lagoon, one on the S

side, three on the E side, and four on the N side. South Pass, East Pass, Berangu Passage, and Mezetchoku Passage have been swept. The remainder are only suitable for small vessels with local knowledge.

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South Pass is about 0.1 mile wide and curving. It has been

swept to a depth of 14.9m within the limits shown on the chart. It is reported that the pass is not suitable for large vessels due to its narrowness and strong currents.

Ailinglapalap Atoll

4.66 Ailinglapalap Atoll (7°16'N., 168°50'E.) lies about

67 miles NNW of Jaluit Atoll and is a series of low islands strung out along the atoll reef. The numerous islands are not more than 1.5 to8m high, but most of them are covered with tall coconut palms appearing black in color. They can be made out from a distance of 10 miles. Ailinglapalap Atoll was re- ported (1963) to lie from 1 to 2 miles S of its charted position. Tides—Currents.—In South Pass, the flood current attains

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a maximum rate of 2 knots and the ebb a maximum rate of 2.5 knots. The currents turn about 1 hour after HW and LW.

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