The Royal Swedish Navy is the naval

Navy

A navy is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake- or ocean-borne combat operations and related functions...

 branch of the Swedish Armed Forces

Swedish Armed Forces

The Swedish Armed Forces is a Swedish Government Agency responsible for the operation of the armed forces of the Realm. The primary task of the agency is to train, organize and to deploy military forces, domestically and abroad, while maintaining the long-term ability to defend the Realm in the...

. It is composed of surface and submarine naval units – the Fleet

Naval fleet

A fleet, or naval fleet, is a large formation of warships, and the largest formation in any navy. A fleet at sea is the direct equivalent of an army on land....

(Flottan) – as well as marine units, the so-called Amphibious Corps

Swedish Amphibious Corps

Amfibiekåren is the coastal defence arm of the Swedish Navy. Until 2000 it was known as Kustartilleriet , but the name was changed to reflect its different role in a post-Cold War world, where its amphibious special operations arm, "Kustjägarna", has grown in significance while its coastal...

(Amfibiekåren).

In Swedish, vessels of the Swedish Navy are given the prefix

Ship prefix

A ship prefix is a combination of letters, usually abbreviations, used in front of the name of a civilian or naval ship.Prefixes for civilian vessels may either identify the type of propulsion, such as "SS" for steamship, or purpose, such as "RV" for research vessel. Civilian prefixes are often...

 "HMS," short for Hans/Hennes Majestäts Skepp (His/Her Majesty's Ship). In correct English "HSwMS" (for "His Swedish Majesty's Ship") is used for Royal Swedish Navy ships when it is necessary to differentiate them from vessels from Her Britannic Majesty's Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

.
The old Swedish kings (ca.