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Voor de passage van de indische oceaan staat er bv:
10.02. Cape T o w n or Cape of G o o d H o p e to Singapore or China Sea
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10.02.01. General notes. Although this voyage takes a vessel out of Indian Ocean waters, properly so termed,
into the Eastern Archipelago and China Sea (which should be considered as "Pacific Ocean" waters), it is treated
more conveniently as a continuous voyage, and will so be considered. As the voyage is complicated not only
by different routes due to monsoons, but also by several alternative channels and straits among the islands of
the Eastern Archipelago. the following procedure has been adopted.
The routes below give, in detail, the passage from the Cape of Good Hope as far as the S entrances to the
Eastern Archipelago, and thence a summary of the various straits and passages to be navigated on the
continuation of the voyage to Singapore or the China Sea. Directions for passages through the Eastern
Archipelago are given in articles 10.30 to 10.51.
Vessels passing the Cape of Good Hope in September have taken, with great success, a route passing S and E
of Australia, W of New Caledonia, through Pioneer Channel (5 ° S. 15,I° E), across the equator in about 156 ° E,
and thence direct. This route is known as the Great Eastern l~oute.
The monsoon periods, on which these routes depend are from May to September, when a SE'Iy or E'ly
Monsoon prevails in the Eastern Archipelago, and a SW'ly Monsoon (usually not strong) in the China Sea;
and from October to March, when a NW.'ly or W'ly Monsoon prevails in the Eastern Archipelago, and a NE'Iy
Monsoon (the latter usually strong) in the China Sea.
The object of a vessel bound to the China Sea being to get as far to windward as possible in the Indian Ocean
before arriving in the monsoon area, she would make for the W end of the island chain during the SW'ly Monsoon
period of the China Sea (May to September) ; and for the more E'ly passages of the chain during the NE'Iy
Monsoon period of the China Sea (October to March). The alternative route to the China Sea, above referred to, is
suitable only in October and November, and passes through the'central part of the island chain.
The following variations to the above are not infrequently taken though they do not appear to possess any
particular advantage.
Though the October to March route to the China Sea is usually made by the more E'ly passages through the
islands, it is possible to make it by passing through Sunda Strait; and then proceeding N through the China Sea
along the N coast of Borneo by Palawan Passage (11.33) ; or else, after passing Sunda Strait, to stand E through
the Java Sea to the E passages.
Vessels bound only to Singapore use Sunda Strait at all times.
Vessels bound to ports on the E coast of Borneo, or in Makassar Strait, etc., use either Sunda Strait, Bali
Strait, Lombok Strait or Alas Strait. These straits could also be used, during the local North-west Monsoon
period, instead of the passage through the islands farther E; and then standing E to pick up the regular Eastern
route.
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