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For other nations' commando frogmen, and information about frogmen in general, see Frogman.
For other nations' naval work divers, see Clearance Diver.

The Clearance Diving Teams (CDT) [1] of the Royal Australian Navy also act as commando frogmen: they consist of naval personnel who are qualified in diving, demolitions, underwater repairs, and reconnaissance. They fulfil a Maritime Counter-Terrorist role as part of the waterborne troop of the Tactical Assault Group East (TAG EAST).[2]



There are two standing units based in Australia;

A third unit, Clearance Diving Team Three (AUSCDT THREE) is formed when clearance divers are sent into combat. CDT 3 saw extensive service in the Vietnam War, and during the 1991 Gulf War and the 2003 Iraq War.

There are seven Reserve Diving Teams (RDT) which provide supplementary or surge capability in support of regular CDTs in addition to localised fleet underwater taskings:


Clearance divers speed out to their dive site on a fast insertion boat
Clearance divers during a ship boarding exercise in 2006

The Clearance Diving Teams' roles include:

1. Mine Counter Measures (MCM) and Explosive Ordnance Disposal (EOD), including:-

  • Location and disposal of sea mines in shallow waters
  • Rendering safe and recovering enemy mines
  • The search for and disposal of ordnance below the high water mark
  • Clearance of surface ordnance in port or on naval facilities
  • Search for, rendering safe or disposal of all ordnance in RAN ships and facilities, including the removal of Improvised Explosive Devices (IEDs)

2. Maritime Tactical Operations including:-

  • Clandestine hydrographic survey of an amphibious beach
  • Clandestine clearance or demolition of sea/land mines and/or obstacles
  • Clandestine placing of charges, demolitions for the purpose of diversion or demonstration
  • Underwater Battle Damage Repair

3.Tactical Assault Group

  • Counter Terrorism


The RAN's diver training program is centered around a week-long clearance diver assessment test (CDAT), colloquially known as "hell week". Recruits begin each day at 2 am in the morning, and are put through over thirty staged dives designed to test their strength and endurance.[1]



  1. ^ "Hell Week". Navy Divers. 2008-10-28. No. 1, series 1.


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