In entering the bay by this channel, steer so as to pass round Middle Rock, and upon bringing the peaked summit of Jar Island, at the bottom of the port, between it and Long Rocks, bearing South 29 1/2 degrees West, steer directly for Jar Island, until you are abreast of Middle Rock, when you may haul close round it, with fourteen and sixteen fathoms: when you have passed the Long Rocks, a course may be directed at pleasure into the bay.
There is also a deep passage to the westward of Middle Rock; but it is too narrow to be safe.

The tide sets through the channels with great strength; with the flood-tide there is no danger, as the stream will carry a vessel through the deepest part; with the ebb-tide, however, it should not be attempted.
The western entrance to Vansittart Bay is between the land of CAPE BOUGAINVILLE and the Eclipse Islands: it is three miles and a half wide, and quite free from danger.

The approach to it, between TROUGHTON ISLAND (latitude 13 degrees 44 minutes 10 seconds, longitude 126 degrees 11 minutes) and the reefs in the offing, is six miles wide, and probably quite safe.

We did not ascertain the existence of a channel on the east side of the island, but it appeared to be free from danger, and, if so, would be the best approach.

ECLIPSE HILL, being higher than the land near it, and conspicuous from its flat tabular shape, is a good mark for the port; it is in latitude 13 degrees 54 minutes 20 seconds and longitude 126 degrees 18 minutes 40 seconds.
Vansittart Bay is eighteen miles deep, and from five to ten broad; it offers excellent anchorage.