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Sector 10. Micronesia, Palau, and Guam

A disused lighthouse stands on the reef on the W side of Pohnpei Passage.

10.9

Sapwtik (Japutik), an island 40m high and covered with coconut palms, is connected to the N end of Langar by a drying reef.

10.9 10.9

Pilotage.—A licensed pilot is available. The pilot boat will

meet the ship approximately 1 mile off the entrance of Sokehs Passage. Pilotage services must be requested by radio in ad- vance.

10.9

Anchorage.—The best anchorage is in Langer Road, in

49m, taking care to avoid the unmarked shoals. It was reported that anchorage inside Sokehs Passage, about 0.5 mile NNE of Toletik Point, has good holding ground with little influence from the wind or current.

Vessels anchoring inside Sokehs Passage must ensure not to obscure the leading lights shown seaward.

10.9 10.9

The lagoon NE of Sapwtik provides anchorage space for

large vessels. It is fully exposed to the NE trades, but the barrier reef offers protection from seas and swells. Scattered shoals and reefs, some of which are marked by buoys or beacons, are found in the lagoon.

10.9

Directions.—Sokehs Passage is marked by leading lights

fitted on two dayboards, painted black and white vertical stripes, in line bearing 145°.

Caution.—Caution is advised as numerous uncharted coral heads are known to exist within the waters of the island. Langer Road may be used for emergency anchorages, but local knowledge is recommended.

10.9 10.9 10.9

Prevailing heavy rain frequently obscure navigational marks. 10.10 Ant Atoll (6°48'N., 158°01'E.) consists of two rela-

tively large islets and 12 small islets lying on the E and S sides of an atoll which encloses a lagoon. The W and N sides of the atoll are submerged, except for Wolauna, an islet.

10.10

Tauenai Passage, located on the SE side of the atoll, leads

into the lagoon between two curved reefs which extend from the entrance points. It is readily identifiable at LW as the reef bares on each side of the channel at that time. The passage is about 90m wide and has depths of over 15.2m. Inside the la- goon there are many detached reefs in the vicinity of the barrier reef, with the central part being relatively clear.

10.10

The flood current attains a velocity of 1 knot while the ebb a

velocity of 2 knots in the passage. Caution is necessary as eddies are found in the entrance. The best time to enter the passage is reported to be about 5 minutes before LW, when the tidal current is at minimum strength.

10.10

Pakin Atoll (7°04'N., 157°49'E.) consists of five islands and

a number of islets enclosing a lagoon. Nikalap is the largest island and lies at the NW end of the lagoon. The only channel into the lagoon is a boat passage leading through the SW side of the atoll.

10.10

Ngatik Atoll (5°49'N., 157°16'E.) consists of ten small is-

lands and islets, all of which are low, flat, and densely covered with coconut palms. A radio station is situated on the atoll. The pass into the lagoon lies on the SE side of the island, is

10.10

about 114m wide, and clearly defined at LW. This channel should only be attempted by small vessels with local know- ledge, under favorable conditions of light and tidal current. A least depth of 11m was reported in the pass entrance. The slack

273

water ebb within the pass is reported to occur about 1 hour 30 minutes after LW at Pohnpei.

10.10

Three beacons mark the E side of the pass and indicate the

channels leading from the pass to the lagoon proper. The S beacon is a plastic pipe in a concrete base, which marks the S side of a lesser channel. The N two are more substantial struc- tures marking the main channel. In 1986, a vessel recom- mended making the turn on the beacon with a green triangular daymark, leaving it very close to starboard, and leaving the beacon with a red square daymark very close to port.

Some of the coral heads within the lagoon are marked with old concrete structures, or newer, locally made beacons. Caution.—It has been reported (1986) that the entire atoll is

10.10 10.10

charted 2.5 miles SSW from its actual position, with the slope of the reefs and the positions of the islands being misrepresent- ed. Depths within the lagoon are reported to be inaccurate, with numerous uncharted and mischarted coral heads being present. An excavated channel shown on the W side of the pass does not exist. Vessels are urged to exercise the appropriate caution.

10.11 Nukuoro Atoll (3°50'N., 155°00'E.) consists of more

than 40 islets, about 3.6m high, standing on the E side of the barrier reef. Nukuoro, an island covered with palm trees and tropical plants, is the center of activity. A small pier is situated on the lagoon side of Nukuoro, which is reported to be unsafe, even for small vessels. There is a radio station on the island. Nukuoro Passage, 27 to 37m wide, leads into the lagoon be-

10.11

tween the reefs fringing the islands of Kaujema and Shenukdei. The passage is deep and is marked by tree branches stuck into the reef, but is fronted by a bar, with a least depth of 8.2m. Nu- merous coral patches, some of which dry, are scattered throughout the lagoon.

10.11

Caution.—The sea is usually high at the bar and becomes

choppy when the tidal currents are strong. These currents sometimes attain a velocity of 6 knots on the ebb. In 1978, the passage was reported to have sufficient depth for small boat operations, but it is very narrow and has an uncharted bend of 45°. The passage should only be attempted at slack water, by small vessels with local knowledge, under the most favorable of conditions.

10.11

In 1985, a vessel reported that anchorage within the vicinity

of the passage was impossible.

10.12 Kapingamarangi Atoll (1°04'N., 154°45'E.) consists

of 30 small wooded islets lying on the E side of an atoll reef. The reef on the W end of the atoll is almost submerged at HW. The islands are covered with coconut palms and other trees. Touhou Island, 35m high and connected N to Veilua Island (Ueru Island) by a causeway, is the center of population and the home of a native chief. A stone and coral pier is situated on the lagoon side of Touhou Island.

10.12

The seaward side of the atoll is steep-to. The lagoon is deep,

but is studded with numerous coral heads and reefs, some of which uncover. A 3m coral head and a 0.3m coral head lie just within the SE channel of Greenwich Passage, located on the SW side of the atoll. A 0.6m shoal is located about 0.5 mile ESE of the NE beacon in Greenwich Passage.

10.12

Tides—Currents.—Tidal currents reach a maximum velo-

city of 5 knots and have a tendency to set toward the reefs on the W side of the passage.

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