Sydney Harbour Force

A luxury cruise boat sinks under tow, just metres from one of the busiest shipping lanes in the country and it's a race against time to re-float the boat and move it safely into harbour.

Two stranded fishermen hang on for their lives as their boat sinks beneath them kilometres out to sea and in shark infested waters.

It's a busy day on the harbour for the guys from the water police including a sprint to find jettisoned blocks of cocaine that have washed up on a nearby beach.

A group of tourists run their hire boat onto the rocks and need to climb over the jagged shoreline to safety and the boat needs to be immediately salvaged.

The rescue helicopter is scrambled to find a missing surfer in treacherous seas off the coast.

Fisheries officers Joel and Molly must board a fishing trawler in rough seas, it's dangerous work with both boats travelling in tandem, one slip and they could easily go overboard.

The team from helicopter rescue are called out to winch an injured seaman to safety from a massive oil tanker, kilometres out to sea and in heavy winds.

The newly re-fitted warship HMAS Canberra heads out to sea for a few days of rigorous testing after a multi-million dollar re-fit.

Marine Rescue are called out on an emergency to look for a missing kayaker off Sydney Heads, the swell is huge and he hasn't been seen for over two hours, now every minute counts.

The Port Authority Pilot must try to board a massive container ship kilometres out to sea, using only a flimsy rope ladder and his skill in this life and death manoeuvre.