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Sector 1. Iles Tuamotu, Iles Marquises, Iles de la Societe, and Iles Tubuai

in a N-S direction and 2.8 miles wide. A reef extends about 0.1 mile from the NW point.

1.24

Anchorage.—Anchorage for small vessels, in 27m, sand

and coral, may be taken 0.5 mile SW of the NW extremity of the island. Larger vessels may anchor farther out, in 37 to 46m, but with NW winds, this anchorage becomes untenable. There is a deep, but narrow, boat passage through the reef,

1.24

0.3 mile S of the anchorage. 1.25 Pitcairn Island (25°04'S., 130°05'W.), about 2 miles

long in an ESE-WNW direction, rises to a height of about 305m. The shore consists of high and almost vertical cliffs, ex- cept in one or two places. The island is thickly covered to the summit with luxuriant vegetation and the cliffs are skirted at their base with thickly branching evergreens.

Adamstown is situated on the N side of the island and is connected with the landing place at Bounty Bay by a path. The most convenient anchorage is off Bounty Bay, on the NE

1.25 1.25

side of the island, in 23 to 31m, about 0.4 mile from shore; St. Paul’s Point is in line with, or just open E of Adams Rock and Youngs Rock bearing 284°. The bottom is sand with rocky patches. The best anchorage with E winds of any strength is in 22m, 0.3 mile offshore, with Youngs Rock bearing 058° and Point Christian bearing 180°. The preferred communication with the shore is in the islanders’ own boats.

Currents in the vicinity of Pitcairn Island generally set to the W at about 0.5 knot, but frequently flow at greater rates. Oeno Atoll (23°56'S., 130°44'W.) is a low and dangerous

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atoll; the shallow lagoon is completely surrounded by the coral reef. Near the center of the atoll there is a large island covered with trees; Sandy Island lies in the center of the N part of the reef. The N ends of both islets were being eroded, and the S end of Sandy Island and the E extremity of the center islet were extending. Two towers, each 24m high and about 1 mile apart, stand on the reef.

Iles Tuamotu

1.26 Iles Tuamotu (Archipel des Tuamotu), consisting of

78 islands, almost all of them atolls, extends for about 950 miles in a general SE direction from a position about 180 miles N of Ile Tahiti. It is divided into two groups for administrative purposes; Iles Gambier and their dependencies forming the E group, and Iles Tuamotu forming the W group.

Iles Gambier and their dependencies, with the exception of Tematagi, lie E of 140°00'W.

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Iles Tuamotu, with the exception of Pukapuka, lie W of

140°00'W. The islands in the S central part of Archipel des Tuamotu include all those which lie S of 18°00'S, between 140°W and 146°W. They extend in the S center from Temetagi (21°40'S., 140°37'W.) to Hao (18°15'S., 140°55'W.) and Maro-kau (18°05'S., 142°20'W.). On the N of 18°S, from Amanu (17°49'S., 140°46'W.) to Napuka (14°08'S., 141°12'W.), and about 10 miles NW where Tepoto lies. Navigation within the territorial waters of Fangataufa Atoll

1.26

and Mururoa Atoll has been temporarily suspended. See Pub. 120, Sailing Directions (Planning Guide) Pacific Ocean and Southeast Asia for details.

1.26

11

Iles Gambier (23°10'S., 134°57'W.) lie near the E end of

Iles Tuamotu. The group consist of ten islands and numerous islets enclosed by or settled on a barrier reef.

1.27 Ile Mangareva (23°07'S., 134°59'W.), the largest of

four main islands, maintains a permanent population. The majority of the population surrounds the main port of Rikitea, on the E side of the island. There is another port at Totegegie, on the barrier reef, 5 miles NE. On the NE side of the barrier reef there are many low detached islets covered with green vegetation. Elsewhere, with the exception of Banc de Tokoru- aat, its W extremity, the reef is submerged; the depths are generally shallow.

1.27

The islands lie within an extensive lagoon. Most are of vol-

canic formation and the larger islands are high, covered with high grass, reeds, and ferns. Some islets are in the lagoon, but most lie on the NE of the reef and they are wooded.

1.27

The barrier reef rises steeply from great depths on its sea-

ward side, except for the gradual rise from the SE. The NE part of the barrier is almost awash. There are three passes through the reef, which are known as Passe de l’Ouest, Passe du Sud- Ouest, and Passe de Sud-Est. All the passes give access to an- chorage in the outer part of the lagoon.

1.27

From a distance, the island may be identified by Mont Duff,

441m high, and rising to two wedge-shaped peaks at its SW end. From the NW, Mont Duff and Mont Mokoto appear as two pointed peaks close together.

1.27

Pilotage.—Pilotage is not compulsory, but is recommended

for the channels and anchorages listed below. The pilot will meet vessels at the entrance to Passe de l’Ouest.

1.27

Caution.—As Passe du Sud-Ouest and Passe du Sud-Est are

exposed to the prevailing sea, the swell may reduce the avail- able depth of water over the bar. It has been reported that the buoys and beacons marking the dangers and channels men- tioned below are unreliable.

1.28 Passe de l’Ouest (23°06'S., 135°03'W.), which lies

between Ile Mangareva and Ile Taravaiis, is obstructed by two bars. The outer bar, which has general depths of 5.2 to 10m, has a least charted depth of 6.7m on the recommended track. The inner bar, which is buoyed, shows depths of 4.4 to 10m, with a least depth of 4m just NE of the track line. Vessels are advised not to use the channel until late morning or early after- noon, when the sun makes it easy to spot the landmarks and shoals.

1.28

Pass du Sud-Ouest is entered by keeping Pointe Teonekura

and Pointe Mataihu in line bearing about 037°, but local authorities report that the points are difficult to see from seaward and caution is advised. Continue on this range until the N end of Ile Agakauitai (23°09'S., 135°02'W.) is in range with the W extremity of Ile Taravai, about 270°. Alter course to port to avoid a shoal with a least depth of 3.5m, and join the recommended track shown on the chart.

1.28

Caution.—The track line shown on the chart passes close

aboard, or over, isolated shoal depths of 5 to 8.2m. Isolated depths of 5.6 to 10m lie within 91m of the turn point men- ioned above.

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