His Majesty's Naval Service
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His Majesty's Naval Service is the United Kingdom's naval warfare and maritime service. It consists of the Royal Navy, Royal Marines, Royal Fleet Auxiliary, Royal Naval Reserve, Royal Marines Reserve and Naval Careers Service. Wikipedia
First Sea Lord: Admiral Sir Ben Key
Fleet Commander: Vice Admiral Andrew Burns
Navy Command Headquarters: Whale Island, Portsmouth, UK
Part of: British Armed Forces
Role: Naval, expeditionary and amphibious warfare