Sea Patrol - Season 4 - Eps 1: Night of the Long Knives
The crew of HMAS Hammersley uncovers a terrorist plot to assassinate a senior US official. Kate has doubts about Hammersley's popular new crewmate, a war hero with a dark secret. Mike resists a promotion to Navcom, even though it would allow him and Kate to pursue their relationship.
About Sea Patrol

Title: Sea Patrol
First Air Date: 2007-07-05
Last Air Date: 2011-07-12
Status: Ended
Rating: 6.95/10 (from 20 votes)
Language: EN
Seasons: 5
Total Episodes: 68
Network: Nine Network
Genres: Action & Adventure, Drama
Production Companies: Nine Film & TV Pty
Synopsis
Sea Patrol is an Australian television drama set on board HMAS Hammersley, a fictional patrol boat of the Royal Australian Navy. The series focuses on the ship and the lives of its crew members.
Cast

John Batchelor
Andy 'Charge' Thorpe

Conrad Coleby
Dylan 'Dutchy' Mulholland

Dominic Deutscher
Ryan White

Matthew Holmes
Chris 'Swain' Blake

Danielle Horvat
Jessica 'Gap Girl' Bird

Lisa McCune
Kate 'XO' McGregor

Nikolai Nikolaeff
Leo '2 Dads' Kosov-Meyer

Kristian Schmid
Robert 'Ro' J. Dixon

Ian Stenlake
Mike 'CO' Flynn