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Sector 4. The Kiribati Islands to the Marshall Islands

exposed to S winds. Anchorage at Roi-Namur should be done only under the guidance of Kwajalein Harbor Control. Directions.—When wind velocities exceed a rate of 35

knots, inbound vessels should be alert for instructions, as they may be directed to an anchorage rather than to an alongside berth. During the typhoon season (July to December), vessels should contact the weather station prior to departure.

4.69

Vessels approaching Gea Pass from the S should make cer-

tain that the pass is open and that Lighted Buoy No. 6 is clearly identifiable. A course of 074°, with that buoy ahead, leads mid- way between Lighted Buoy No. 2 and Buoy No. 3. The cur- rents in this area are usually S, but N currents have been ex- perienced. Therefore, sufficient way should be kept so as to avoid being set onto either the S shore or upon the coral heads N of the channel. When the post on the NW point to Gea Island bears about 200°, course should be altered to 090° following the recommended track on the chart. When the stern of the wreck off Ennylabegan Island is abeam to starboard, alter course to 123°. When the vessel is abeam of Buoy No. 1, alter course to 135°. Alter course to keep Round House near the center of Kwajalein Island ahead at 135°.

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Vessels entering the lagoon through South Pass should steer

a course of 063°, passing about midway between the entrance buoys. When the NW tangent of Enubuj Island bears 147°, the course should be altered to 096°, being careful to avoid the charted shoal patches. When the Round House near the center of Kwajalein Island bears 135°, alter course to that bearing. Vessels should approach Milu Pass on a course of about

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170°. When Milu Island bears about ENE, follow the recom- mended track on the chart.

Take care to avoid the shoals, wrecks, cable areas, and other hazards when navigating within the lagoon, which are best seen on the chart.

4.69 4.69

Caution.—Due to the existence of wrecks and cables, ves-

sels are cautioned against anchoring within the lagoon without first contacting local authorities.

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During the season of the trade winds (June to October), a

surge develops alongside the main piers on Kwajalein Island. Cargo operations are sometimes hindered and mooring lines are sometimes parted.

4.70 Lae Atoll (8°55'N., 166°16'E.) lies about 40 miles

WSW of the W extremity of Kwajalein Atoll. The Lae Atoll has 10 or more islets, most of which are on the E side of the reef enclosing the lagoon. Lae Island, at the SE extremity of the atoll, is 2.4m high and the center of activities for the island group. A light, privately maintained, is shown on Lae Island.

Tides—Currents.—Strong currents set in and out of the entrance. There is a little or no current in the lagoon.

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Aspect.—The only entrance is on the W side of the atoll,

and is shoal and narrow. It should only be attempted by small vessels with local knowledge under only the most favorable conditions. The entrance is hard to identify, except when the sun is overhead. The reef on the N side of the entrance is hard to identify; the S side is generally marked by breakers. Vessels should enter by keeping about 45m off the breakers on the S side of the channel.

Anchorage.—Sheltered anchorage and good holding ground can be taken by small vessels with local knowledge in the

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lagoon. Anchorage has been taken about 0.3 mile N of the W end of Lae Island.

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Caution.—Numerous scattered dangers lie in the lagoon,

and in the area between the entrance and the anchorage off Lae Island. These dangers are identifiable under favorable con- ditions of light.

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The lagoon has not been closely examined and uncharted

dangers may exist. It was reported (1979) that islands exist where none are charted, and that some of the islands were of different shape and length than they appear on the chart.

4.71 Ujae Atoll (8°56'N., 165°45'E.) lies about 27 miles W

of Lae Atoll. It consists of islets which are covered with coconut palms. Ujae Island, located at the S extremity of the atoll, is the principal islet,.

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Bock Channel (9°02'N., 165°36'E.) is suitable only for

small vessels with local knowledge, and then only under the most favorable of conditions.

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Tides—Currents.—Tidal currents in Bock Channel are

strong and unpredictable. A vessel entering 1 hour before LW experienced a 3 knot S set.

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Anchorage.—Anchorage in the lagoon is not recommended

as the bottom is very irregular. 4.72 Wotho Atoll (10°02'N., 166°01'E.) lies about 56

miles NNE of Ujae Atoll and consists of a number of islets on the reef enclosing the lagoon, all of which are covered with trees. Wotho Island (10°10'N., 166°00'E.) lies at the NE extremity of the lagoon and is the principal island.

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Aspect.—Small vessels, with local knowledge, can enter the

lagoon through Ombelim Channel and Medyeron Channel, on the W side of the atoll. It may be attempted only during the most favorable conditions. The least depth reported in these channels was 9.1m and 18.3m, respectively. The lagoon is studded with dangers.

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Anchorage.—Anchorage is reported about 0.3 mile SW of

the village on Wotho Island. Anchorage can also be taken off the SE side of Medyeron Island (10°11'N., 165°55'E.) and in the area N of Begin Island (10°07'N., 165°56'E.). These an- chorages cannot be considered safe as dangers lie in their immediate vicinity and in their approaches.

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Caution.—It was reported (1979) that Wotho Atoll was of a

different shape than it appears on the chart. 4.73 Rongerik Atoll (11°16'N., 167°25'E.), located about

104 miles NE of Wotho Atoll, is comprised of about ten is- lands. The only islands which are wooded with coconut palms are Rongerik Atoll and Enewetak Atoll , located on the NE and SE extremities of the atoll, respectively. The other islands are lightly wooded. There are numerous coral heads within the lagoon.

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Because of the effects of numerous nuclear experiments,

radioactivity on Rongerik Atoll is considered to be at a higher level than that to which human beings should be exposed. Mariners are advised to keep clear of this area.

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Eniwetak Pass (11°17'N., 167°28'E.), which is about 0.2

mile wide, appears to have depths of 18.3 to 25.6m. The chan- nel has been swept to 12.5m within the limits shown on the chart. The dangers bordering on and within the channel are plainly visible under favorable conditions of light.

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