SAILING DIRECTIONS. 
381 
trance, that is, between the breakers off the point and the 
bar, in three fathoms sand, bringing the summit of Green 
Island, in the harbour, on with the extremity of the bushes of 
the west point of entrance, and the highest part of Breaksea 
Island in a line with the outer point of the bay: a boat 
should then be sent to sound the bar. The mark for the 
deepest part is when the western summit of some flat- 
topped land, at the back of Oyster Harbour, is a little open 
of the rocks off the east side of the entrance. 
After the bar is passed, the channel is deepest when the 
centre of the flat land is kept midv/ay between the points of 
entrance, avoiding a spit of rocks that projects from the 
rocky point at the west end of the watering beach. The 
strongest winds are from the westward, and therefore bower 
anchors should be placed to the south-west and north-west : 
warps and the stream cable will be sufficient to secure her 
from easterly winds, as the hills rise immediately over the 
vessel on that shore. If the run of water outside the bar 
should fail, holes may be dug at the edge of the grass, about 
three feet deep, which will yield a sufficient quantity in two 
or three days for any vessel that can pass over it. 
The flood-tide in the entrance generally ran sixteen hours, 
and ebbed eight hours. High water at full and change took 
place at 10^" 10' at night; but on the bar the rise and fall 
was very irregular, and a vessel going in should pay great 
attention to the depth, if her draught is more than ten feet, 
for it sometimes rises suddenly two feet. The spring-tides 
take place about the third or fourth day after new or full 
moon. The variation here is about 7° East. The situation 
of Seal Island, from Captain Flinders’s observations, is in 
latitude 35° 4' 55", and longitude 117° 58' 7". 
A small island was reported in the Sydney Gazette to have 
been seen in latitude 36° 27', and longitude 127° 2' East; 
A. 
Sect. VI. 
S. Coast. 
