CHART NO. 4001
CHART TITLE: ELPHINSTONE HARBOUR AND RANGAT BAY

East Coasts of Middle Andaman Island and Baratang Island

 The coast between Cape Vestal and Cape Strachan, about 9 miles SSE, is high and clear of off-lying dangers. The latter projection forms the N entrance point of Cuthbert Bay. Mount Diavolo, 512m high, lies about 3.5 miles W of the same 
 point. Between Cuthbert Bay and Coxon Point, about 13 miles to the S, the coast continues to be high.
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 Rangat Bay (12°29'N., 92°58'E.) is entered between Coxon Point and Johns Point, about 0.8 mile to the S. Both points are bold and bluffy.
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 A shoal, with a depth of 7.3m near its outer end, extends about 2.3 miles E from Coxon Point. The inner part of this shoal has several detached heads, with depths which range from 3 to 4.9. A rock, which dries 1.1m, lies among these 
 heads about 0.8 mile ENE of Coxon Point.
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 A drying reef extends about 0.5 mile SE from Johns Point.
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 Anchorage can be taken in depths of 6.4 to 9.1m, midway between the entrance points of Rangat Bay. Local knowledge is required because the depths shoal rapidly within the entrance points.
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 Between Johns Point and a 117m promontory on Baratang Island, about 17 miles SSW, the coast is bordered by numerous islands and dangers and indented by many bays. Between the promontory and North Point, the SE end of Bartang Island, 
 about 9 miles SW, the coast is indented by many reef fringed bays and backed inland by hilly terrain. North Point forms the N side of the S entrance of Andaman Strait.
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 Long Island (12°24'N., 92°57'E.) densely wooded and fringed by shoal ground, lies about 2.5 miles SSW of Johns Point. Its W coast is joined to Middle Andaman Island by a shallow flat.
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 Long Island is the northernmost of a chain of islands, reefs, and other dangers which extend S for about 15 miles from a position about 2.5 miles S of Johns Point. The islands are separated from each other, and from Middle Andaman and 
 Baratang Islands, by fairly narrow, shoal channels. Small vessels with local knowledge can find shelter in some of these bays. Elphinstone Harbor, which provides sheltered anchorage, lies close to the E entrance of Homfray Strait, 
 which separates Middle Andaman and Bartang Islands.
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 Guitar Island (12°21'N., 92°55'E.) lies about 0.8 mile SSW of Long Island and is joined to Middle Andaman Island by a shallow flat. Cape Dalrymple forms the S end of an islet, 75m high, which lies close S of Guitar Island. Round Island 
 lies about 183m W of the SW end of Guitar Island.
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 A shoal, with a least depth of 2.7m, lies about 0.45 mile SSE of Cape Dalrymple. A detached patch, with a least depth of 7.6m, lies about 1 mile SSE of the same cape.
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 Nancowry Ledge (12°20'N., 92°56'E.), which has depths of less than 1.8m, lies about 1.3 miles E of Cape Dalrymple. 
 Anderson Rock (12°26'N., 92°59'E.), which dries 0.3m, lies 1 mile E of the N end of Long Island.
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 Campbell Shoal (12°25'N., 93°04'E.) lies about 6 miles ESE of the N end of Long Island and has a least depth of 5.5m, rock. It lies on the E side of an irregular bank about 2.8 miles long and 1.3 miles wide, which has depths which range 
 16.5 to 36.6m.
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 Headlam Patch (12°24'N., 92°59'E.), with a least depth of 2.2m, lies about 2.5 miles SSE of the N end of Long Island. Depths of 5.5 to 16.2m surround this danger.
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 An extensive shoal, with a depth of 4.6m near its SW end and a depth of 8.2m near its NE end, lies between 5.3 and 7.8 miles E of Cape Smith, the S end of Long Island. A detached shoal, about 1 mile in extend, lies with its shallowest 
 depth of 3.7m, about 6.3 miles ESE of Cape Smith.
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 Ostmaston Shoal (12°21'N., 92°58'E.), with a least depth of 3m, lies about 1.8 miles E of Cape Smith.
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 North Passage Island (12°16'N., 92°56'E.), irregular in shape, high, and wooded, lies 3 miles S of Long Island. Cape Portman is the NE extremity of the island. The E side of the island is fronted by dangerous foul ground which extends 
 up to 2 miles offshore. Balfour Reef extends about 1 mile N from the NW end of the island. Merk Bay, which lies between Balfour Reef and the promontory to the E, has depths of 12.2 to 25m.
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 Homfray Strait , an intricate, rocky channel connecting Elphinstone Harbor with Port Anson, separates Middle Andaman Island from Baratang Islands. Depths in the fairway are not less than 5m, except near the E entrance where the depths 
 over the bar is very shallow.
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 The channel between North Passage Island and Strait Island is shallow and foul.
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 The channel between North Passage Island and Colebrooke Island is about 0.5 mile wide and has depths of 5.5 to 18.3m. Small vessels with local knowledge can use this passage which is obstructed in places by reefs and shoals.
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 Colebrooke Passage is 0.2 mile wide with depths of 7.3 to 18.3m. Its N part is shallow.
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 Anchorage:
 Vessels can anchor about 0.3 mile SW of the jetty previously mentioned in depths of 8.2m, but the swinging room is restricted. Anchorage can be taken in a depth of 23.8m, good holding ground, about 10.3 miles W of Cross Point.
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 Well sheltered anchorage with good holding ground can be taken in a depth of 15.5m near the S end of Colebrooke Passage, with Cape Union in line bearing 065° with the center of Middle Button Island.
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Caution:
 A depth of 3.2m lies a little over one mile W of Cape Union, and a 5m patch lies about 0.8 mile SW of the same cape.
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 Elphistone Harbour (12°18'N., 92°54'E.), which is formed by the N part of the channel which separates North Passage Island from the E side of Baratang Island, is entered between Cape Dalrymple and Cape Portman, about 1.8 miles SE. 
 The 118m hill, which lies on the N entrance point of Homfray Strait about 2 miles WSW of Cape Dalrymple, is a useful mark. A prominent tree lies on Guitar Island. Depths in the entrance range from 7.9 to 25.6m, decreasing gradually 
to depths of 6.1 to 18.3m within the harbor. Numerous shoals and reefs obstruct the inner harbor, the positions of which can best be seen on the area chart.
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 Mills Passage (12°15'N., 92°55'E.), between the S part of North Passage Island and Colebrooke Island, has a least width of 0.5 mile and depths of 5.5 to 20.1m. Numerous shoals and reefs obstruct the passage which can only be used by 
 small craft with local knowledge.
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 Anchorage can be taken in a depth of 18.3m, good holding ground, about 0.3 mile off the coast of North Passage Island, with the NW point of that island bearing 029°, distant 0.5 mile.
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 Middle Button Island (12°17'N., 93°02'E.), 50m high, lies about 3 miles SW of North Button Island. The N end is cliffy, but the SW point terminates in a short sandspit with a few low rocks off it. Shoals, with depths of 8.2m, extend 
 about 1.5 miles NNE from the N end of the island. A rocky ridge and shoal ground extends about the same distance SW from the island. A light is shown on the NE side of Middle Button Island.
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 Small vessels with local knowledge can anchor S of Middle Button Island clear of the shoals.
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 Outram Island, 3.5 miles S of North Button Island, will be described under Ritchies Archipelago.