The northern point of the northernmost island is in latitude 15 degrees 7 minutes 15 seconds, and longitude 124 degrees 56 minutes 40 seconds.

The group is fronted on the north-west side by a considerable reef, extending North by East 1/2 East for seven miles; the outer edge being three miles and a half to the westward of the group.
YORK SOUND is fourteen miles wide and ten deep: it is contained between Cape Pond and the northern extreme of the Coronation Islands.

It is spacious, but the bottom, in the middle, is rocky: there is, however, very good anchorage near the Coronation Islands; and there is also, possibly, as good on the eastern shore to the south of CAPE POND, which has a rocky island immediately off it, the situation of which is in latitude 14 degrees 43 minutes 20 seconds, and longitude 125 degrees 9 minutes 25 seconds.
At the bottom of York Sound is PRINCE FREDERIC'S HARBOUR, a fine spacious port, fourteen miles long, and from five to seven broad: it is terminated by two rivers, namely Hunter's and Roe's.

It has several rocky islands on either shore; and, at the bottom, they are numerous.

The tide here rises at the springs twenty-nine feet.