One of the problems with owning a bigger boat in Darwin, is the height of the tides. If you cannot easily remove your boat from the water at the end of the day, it makes sense to keep the boat in a marina.

Over 7 metres of tidal movement every six hours means marinas must be protected by lock gates. These gates hold back the water within the marina when the water level outside is much lower. Boats can still move between the low and high water by going through the lock.

This photo is of the outer lock gate at Cullen Bay marina. The boat is a 60' yacht heading out to join the start of the Darwin to Kupang yacht rally.