| Underwater Offence Group Command | 
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| Active | 1963–present | 
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| Country | Turkey | 
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| Allegiance | Turkish Armed Forces | 
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| Branch | Turkish Navy | 
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| Type | Special Forces | 
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| Motto(s) | "Any time, any place!""I fight where I am commanded, I win where I fight""The only easy day was yesterday"
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| Engagements |  | 
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| Abbreviation | SAT | 
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The Underwater Offence (Turkish: Su Altı Taaruz), abbreviated SAT, is the special operations force of the Turkish Naval Forces. They are affiliated with the Naval Operation Directorate.
During wartime, these units are responsible for carrying out stealthy attacks, sabotage, and raids on enemy strategic facilities including those located under water, over water, on land, or in the air. They also target floating platforms. The SAT participates in coastal reconnaissance tasked with obtaining information on coastal areas before deploying forces and maintaining control over foreign ports and underwater areas.