Sea Patrol.
Where: 9Now
From 2007 to 2011, Australians hit the water to follow the crew on HMAS Hammersley in the Royal Australian Navy.
Lasting 5 seasons and having an all-star cast, the show was an expensive project for Channel 9, having invested $15 million and nominated for a few Logies. However, due to government rebates expiring after 65 episodes, the show wrapped up at 68.
Where can I buy the boxset: All 5 seasons were released on DVD, but are now out of print. Again, eBay is the best way to go.