Sailing Guide

Tanjung Sinaboi to Singapore strait (E Sumatra)

Tanjung Sinaboi to Singapore strait (E Sumatra)



The S coast of the Strait of Malacca between Tanjung Sinaboi and Tanjung Medang, the N point of Pulau Medang about 37 miles ESE, is fronted by numerous mudbanks, which are a continuation of South Sands. Some of these banks dry and are marked by occasional breakers.

Pulau Medang and Pulau Rupat are separated from the Sumatera coast to the W and S by Selat Rupat, a deep passage with the petroleum port of Dumai on its S side.
Supertankers can be accommodated alongside the berths at this port.

Between Pulau Medang and Pulau Bengkalis, about 25 miles SE, the coast is bordered by mudbanks which extend up to 23 miles offshore.

Selat Bengkalis passes through these banks and forms the E entrance channel leading W to the oil port of Dumai.

The other branch of the channel extends SE and E for about 100 miles and then about 32 miles NE to join the E end of the Strait of Malacca.
Pulau Bengkalis, Padang, Merbau, Rangsang and Tebing Tinggi are separated from the coast of Sumatera by Selat Bengkalis, Selat Lalang and Selat Pandjang and from each other by narrow channels.

The E end of Pulau Bengkalis and the N coast of Pulau Rangsang are fronted by several long, narrow ridges of mud and sand, which lie up to 19 miles offshore, N of Pulau Rangsang.

The coast between Tanjung Sinaboi and Tanjung Ketam, about 23 miles SE, is uniformly low and overgrown with mangroves.
Good anchorage can be taken in the channel off this coast.

Between the inshore channel off the coast between Tanjung Sinaboi and Tanjung Ketam and the fairway of the Strait of Malacca, there are many mud banks which are a continuation SE of South Sands, as far as and S of Pyramid Shoal.
Bakal Iba Bank lies parallel to and about 1 mile offshore close NW of Tanjung Ketam; it dries at its SE end, and has depths of 0.3 to 1.8m, hard sand, over the remainder. In the channel between the bank and the coast there is a least depth of 8.8m at its SE end.


Along the edge of the coastal bank W of Pulau Sinaboi and in the channel between Tanjung Sinaboi and Tanjung Ketam, the currents set generally fair with the channel, setting SE at a maximum rate of 2 knots, and NW at 3 knots. The currents turn about 3 hours after HW and LW along the shore. About 7 to 9 miles NW of Pulau Rupat, the currents set from E to ENE and from W to NW at a rate of 2 knots.
The irregular outline of the shoals, however, causes deflections of the current, so that caution is very necessary. The current turns about 3 hours after HW and LW along the shore.Near the banks off the N entrance of Selat Rupat, the currents set diagonally across, from and to Bakal Tua Bank.

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Sites around Tanjung Sinaboi to Singapore strait (E Sumatra)
Flying distances - Direct line

South Sands (NE Sumatra))

South Sands, to the NNW, extends about 50 miles SE from a 7.4m patch about 8 miles SW of One Fathom Bank Light and terminate between Pyramid Shoal and the Sumatera coast to the S.
These shoals extend over halfway across the strait from the Sumatera coast and are separated by ...
25 Jan 12

Pulau Tebingtinggi (Sumatra)

Tebingtinggi is an island directly W of Padang island and S of Rangsang island, in Riau Province of Sumatra.
The capital is Selat Panjang.Close to the SE end of Pulau Tebing Tinggi there is a narrow channel, with a least depth of 3.5m, leading into the E end of Selat Pandjang.
The ...
29 Jan 12

Pulau Medang - Pulau Rupat (E Sumatra)

Pulau Medang and Pulau Rupat are separated from each other by a narrow, winding strait of no importance to navigation. Both islands are heavily wooded.
Pulau Rupat is separated from the coast of Sumatera by Selat Rupat.
Foul ground, with numerous drying patches, extends about ...
25 Jan 12

Pulau Bengkalis (E Sumatra)

Pulau Bengkalis is uniformly covered with vegetation. Its N coast is fronted by shallow ridges running parallel to it and separated by deeper channels.
The village of Bantantengah lies about midway between Tanjung Jati and Tanjung Parit, the NE end of the island. During May and ...
30 Jan 12

Pulau Rangsang (E Sumatra)

Pulau Rangsang, with an area of 908 km², is E of Merbau island and N of Tebingtinggi island.
The N and NE coasts of Pulau Rangsang are fringed by a mud bank which dries out up to 1 mile offshore. A village stands on the NE side of the island 8 miles SE of Tanjung Kedabu, the NE ...
27 Jan 12

Pulau Padang (E Sumatra)

Padang Island is an island  in Riau province, Indonesia, close to the east coast of Sumatra island. The area is 1109 km². close to the east coast of Sumatra island.
It should not be confused with the city of Padang, Sumatra, or the island Padang in Borneo.
27 Jan 12

Karimun islands (Riau-E Sumatra)

The Karimun Islands consist of Great Karimun (Pulau Karimunbesar), Little Karimun (Pulau Karimun Ketjil), and a number of off-lying islets.
They differ in character from the low marshy islands of the E coast of Sumatera, being hilly with fertile soil, and are well-populated. They ...
31 Jan 12

Pulau Merbau (E Sumatra)

Pulau Merbau, separated from the adjacent islands by Selat Asam and Selat Ringgit, is bordered by a shoal bank on its NE side which extends about 12 miles offshore.
The inner part of this bank dries.
27 Jan 12

Pulau Manggung Topang Lebu Serapung Mendol (E Sumatra)

Pulau Manggung, Pulau Topang, Pulau Lebu, Pulau Serapung, and Pulau Mendol, which stand off the entrances of both Selat Ajer Hitam and Selat Pandjang, are low, thickly wooded islands.
A pier extends from the SW side of Pulau Mendol.
A shoal area with depths of less than 5.2m ...
29 Jan 12

Rob Roy Bank (Sinaboi - E Sumatra)

Rob Roy Bank, a ridge about 15 miles long in a NW to SE direction with a least depth of 2.1m, lies about 27 miles SE of Tanjung Medang. A patch with a depth of 2.4m lies about 1.5 E of the 2.1m depth. The bank is steep-to on its NE and SW sides.
A lighted beacon, exhibiting a racon, ...
29 Dec 11

Tanjung Padang (E Sumatra)

From Tanjung Padang,  the S entrance point of the W end of the strait, a spit with a depth of 1.8m at its outer end, extends 2.5 miles W from the point. The spit dries up to 1 mile W of the point.
Dedap, a wooded islet, lies on a sandbank which extends about 0.2 mile offshore ...
26 Jan 12

Selat Lalang (E Sumatra)

Selat Lalang is about 2.2 to 4 miles wide and has a least depth of 11m in the fairway but there is a ridge with a depth of 8m near the middle of the strait abreast Makapan Settlement which stands on the W bank about 15 miles S of Tanjung Lajang.
In Selat Lalang and Selat Pandjang ...
27 Jan 12
Local Area

Sumatra (Indonesia)

Sumatra (Indonesian: Sumatera) is an island in western Indonesia, westernmost of the Sunda Islands.
The longest axis of the island runs approximately 1,790 km (1,110 mi) northwest-southeast, crossing the equator near the centre. At its widest point the island spans ...
7 Jan 12

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering about 20% of the Earth's water surface. It is bounded on the north by Asia (including the Indian subcontinent, after which it is named); on the west by Africa; on the east by Indochina, the Sunda Islands, ...
6 Apr 12

Pulau Burung (Burung-E Sumatra)

Pulau Burung (Boeroeng), 4 miles NNW of the entrance of the Sungai Kateman, is low, wooded, and separated from the Sumatera coast by a narrow channel.  Pulau Burung is a drying bank extends from 1 to 2 miles from the ends of the island.
Kateman Island and Pulau Burung are ...
27 Feb 12

Pulau Garang and Pulau Galang Baru (Indonesia)

Pulau Galang and Pulau Galang Baru (Galang Baroe), S of it, both hilly and thickly wooded, are separated by Selat Penjabung. On the E side of these islands are numerous islands and reefs terminating E in Pulau Karas-besar.
11 Feb 12

Pulau Bintan (Indonesia)

Bintan Island or Negeri Segantang Lada is an island in the Riau archipelago of Indonesia. The capital Tanjung Pinang, lies in the island's south.
Bintan, is the largest among the 3200 islands of Riau Archipelago and is located 10 km E of the Batam Island.
Bintan is very close ...
24 Feb 12
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