I am only aware of four lots of public moorings on Sydney
Harbour. They are at Cabarita (just south of marina, map is wrong), Mosman (in front of the zoo), and the two lots in Middle Harbour (Bantry Bay - very nice - is very popular on weekends, Sugarloaf Bay not quite so much).
In general the harbour is more relaxed on weekdays. Weekends I sometimes feel like a speed bump. Do revise the maritime rules and remember that ferries have absolute right of way (and always take it).
Sydney Harbour maps can be downloaded free from here
or they can be purchased online. The public mooring
are pink on the printed map, though they appeared black (Police mooring!) on my downloaded copy.
In general there is much useful information on the NSW Maritime website
have pumpout facilities, but some do not seem to be operational. Other members may be able to comment on the frequency of holding tank
If you have a VHF radio
then Marine Rescue
on channel 16 will log you on and off if you might leave the harbour and are available 24 hours if you need help. They're friendly but do appreciate correct procedure!
and secure are adjectives not often heard when discussing marine
matters in Sydney. However my very limited experience of thieves in Sydney has been that they are rather snobbish, and a reasonable attempt to make things difficult for them has them going elsewhere. Do make sure that no portable items of value are left on the boat. I have a lock on my trailer and the hitch, and if the dinghy
is on the trailer I have a stout chain joining the two together. If parking on the street a length of chain attaching the boat to something stout can't hurt.
You probably have insurance
already, but a call to your company verifying that your boat, trailer and car are covered both for the trip and for your stay in Sydney may be in order. RAA premium towing coverage is desirable.
General rules about security
do apply in Sydney. Check doors (even car when inside!) are locked, don't flash money
or valuables, dress clean and neat, not expensive, and some areas (esp. Redfern) are best avoided. I favour being tucked up snug by 9:00pm but that's not for security