Having completed our duties here, the boats were hoisted in, after despatching one to leave orders for Mr. Knox of the Flying-Fish, in a bottle tied to a flagstaff.
On the afternoon of the 12th, we got under way to proceed direct to Singapore, and passed through the channel between the reef off the Mangsee Islands, and those of Balambangan and Banguey. We found this channel clear, and all the dangers well defined.
As the principal objects of my visit were to ascertain the disposition and resources of the Sulus for trade, and to examine the straits leading into the Sulu seas, in order to facilitate the communication with China, by avoiding on the one hand the eastern route, and on the other the dangers of the Palawan Passage, it may be as well to give the result of the latter inquiry, referring those who may be more particularly interested to the Hydrographical Atlas and Memoir.
The difficulties in the Palawan Passage arising from heavy seas and fresh gales do not exist in the Sulu Sea, nor are the shoals so numerous or so dangerous. In the place of storms and rough water, smooth seas are found, and for most of the time moderate breezes, which do not subject a vessel to the wear and tear experienced in beating up against a monsoon.
The Balabac Straits may be easily reached, either from Singapore, or by beating up along the western shore of Borneo. When the straits are reached, a vessel by choosing her time may easily pass through them by daylight, even by beating when the wind is ahead. Once through, the way is clear, with the exception of a few coral lumps; the occasional occurrence of the north wind will enable a vessel to pass directly to the shores of the island of Panay. A fair wind will ordinarily prevail along the island, and, as I have already mentioned, it may be approached closely. The passage through to the eastward of Mindoro Island may be taken in preference to that on the west side through the Mindoro Strait, and thus all the reefs and shoals will be avoided. Thence, the western coast of Luzon will be followed to the north, as in the old route.
I do not think it necessary to point out any particular route through the Sulu Sea, as vessels must be guided chiefly as the winds blow, but I would generally avoid approaching the Sulu Islands, as the currents are more rapid, and set rather to the southward. Wherever there is anchorage, it would be advisable to anchor at night, as much time might thus be saved, and a knowledge of the currents or sets of the tides obtained. Perhaps it would be as well to caution those who are venturesome, that it is necessary to keep a good look-out, and those who are timid, that there does not appear to be much danger from the piratical prahus, unless a vessel gets on shore; in that case it will not be long before they will be seen collecting in the horizon in large numbers.
Advantages of Sulu treaty.The treaty that I made with the Sultan, if strictly enforced on the first infraction, will soon put an end to all the dangers to be apprehended from them. To conclude, I am satisfied that under ordinary circumstances, to pass through the Sulu Sea will shorten by several days the passage to Manila or Canton, and be a great saving of expense in the wear and tear of a ship and her canvass.
On the 13th, we passed near the location of the Viper Shoal, but saw nothing of it. It is, therefore, marked doubtful on the chart. As I had but little time to spare, the look-outs were doubled, and we pursued our course throughout the night, sounding as we went every fifteen minutes; but nothing met our view.
On the 14th, although we had the northeast monsoon blowing fresh, we experienced a current of twenty-two miles setting to the north. This was an unexpected result, as the currents are usually supposed to prevail in the direction of the monsoon. On the 15th. we still experienced it, though not over fifteen miles. On the 16th, we found it setting west, and as we approached the Malayan Peninsula it was found to be running southwest.
On the 18th, we made Pulo Aor and Pulo Pedang, and arriving off the Singapore Straits, I hove-to, to await daylight. In the morning at dawn, we found ourselves in close company with a Chinese junk. The 19th, until late in the afternoon, we were in the Singapore Straits, making but slow progress towards this emporium of the East. The number of native as well as foreign vessels which we passed, proved that we were approaching some great mart, and at 5:00 p.m. we dropped our anchor in Singapore Roads. Here we found the Porpoise, Oregon, and Flying-Fish, all well: the two former had arrived on January 22nd, nearly a month before, and the latter three days previously. Before concluding this chapter, I shall revert to their proceedings since our separation off the Sandwich Islands.