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The SDF-Navy is the Naval Arm of the Strategic Defence Force, blah. Their civilian counterpart are the Water Polices.


Introduction: Selkie and Water

Foundation of the Navy

See Main Article: Initial Equipment of the SDF-Navy.

When the Navy was founded in 1920, it was a collection of small ships of all cities and towns across the Free Lands. It was analogous to the establishment of the Army, albeit the navies were more disciplined and smaller to begin with. With three dozen torpedo boats, a few corvettes, frigates and two destroyers, nearly all of them of different make and all of them outdated, the Elder Council decided, that a Navy Rearmament Program was in Order.

Cruised Times

See Main Article: Naval Armament Program.

In 1922, the Elder Council laid down the Naval Armament Program, designed to built a strong naval force to defend the Free Lands against fleets several times their size.

Centrepiece were the six light cruisers of the first Rhiannon-class, which would go on to serve up until 1996, after several upgrades, together with dozens of fast attack craft, sloops, mine warfare vessels and other support and auxilliary vessels. The plan to built three heavy cruisers, known as the Maighdean-class Cruiser Proposal, were abandoned in favour of the Cailleach-class Light Cruisers.

The former vessels of the Water Polices, having been requisitioned by the Navy to at least have something, were handed back.

In 1930, the Navy was still in the process of getting up to speed, but by 1940, the young SDF-Navy was already a small, but formidable force.

Equipment in 1940

Equipment of SDF-Navy in 1940
Light Cruisers: Rhiannon-class Light Cruiser, Cailleach-class Light Cruiser
Frigates: Initial Equipment of the SDF-Navy
Sloops: Miodóg-class Sloop
Torpedo Boats: Grey Wolf class Torpedo Boat, Reathaí-class Torpedo Boat
Aircraft Carrying Vessels: SDFS Faoileán (Seaplane Tender)
Submarines: F-1-class Submarine, F-5-class Submarine, F-10-class Submarine

Amphibious Operations Vessels

Attack Transport: Chromán-class Attack Transport
Vehicle Landing Ships: Crogall-class Vehicle Landing Ship

Supply and Support Vessels

Mine Warfare Vessels: Trádghaoth-class Mine Warfare Vessel
Tenders: Leaba-class Destroyer Tender,
Replenishment Oilers:
Hospital Ships:
Other: Survey Vessel SDFAS Dreaga, Type 6 Motorboat

Fighters: Shane Airworks Piongain, Sciathán Léachtóir
Fighter-Bombers: Sciathán Sánnagh
Heavy Fighters: Sciathán Iolar
Bombers: M-22 Faoilean Medium Bomber
Torpedo Bombers: LAF-3M-16 Giodróg
Attack Aircraft: Ironcastle Airworks Iarrean, Ironcastle Airworks Sleanna
Reconnaissance and Maritime Patrol Aircraft: Shane Airworks Débheathach, Monarcha M-29 Prásóg, Shane Airworks Snámhán
Transport Planes: Shane Airworks Lódálaí

Other Equipment

Artillery: Gabha G-91 135mm Gun, Gabha G-23 76mm gun
Anti-Aircraft Weapons: Ceantar C-44 40mm AA Gun, Gabha G-36 20mm Gun, Gabha R-22 Machine Gun
Torpedoes: 533mm torpedoes, 450 mm aerial torpedoes (700 kg)
Rockets: Rocket Barrage Anti-Aircraft System
Mines: Present and Accounted for
Radar: In Development
Sonar: Present and accounted for

Also see: Naval Armament Program (1922) (ran out in 1937), Initial Equipment of the SDF-Navy, Auxiliary Freighter Group, Regiment of SDF-Navy Troopers, Maighdean-class Cruiser Proposal (abandoned by 1933), Equipment of the SDF-Army in 1940
Project 1940: Structure of the SDF-Navy in 1942, Structure of the Imperial Navy in 1940, Structure of the Armed Forces of the Principality in 1940, Structure of the Lutetiian Navy in 1942, Structure of the Armed Forces of the Empire of Kupandukira in 1940
List of Kanmusu of the SDF-Navy

New Times, New Threats, New Navy

The Second Vellenge War

New times, new technologies, new Navy

Battle of Marley Bay

The Navy during Operation Spartacus

2022 Exercises off the Gainimh-Islands


See also: Structure of the SDF-Navy in 2020.

With the signing of the COSTAL-Accords, the SDF-Navy had to undertake

Early in 2021, the SDF-Navy announced a construction programme aimed at preparing the Navy for the new challenges ahead pertaining the SEA-Membership and the requirements coming with it. At the same time, the Navy announced the deactivation and ultimately decommissioning of various vessels. The construction programme will result in the Searc-class Frigates (replacing the Claíohm-class Frigates and Sciath-class Corvettes), planned to join the fleet starting 2026, and the Tine-class Corvettes (replacing the Sciath-class Corvettes and the Faolchu-class Fast Attack Craft), which will join the fleet starting 2030. SDY did not participate in the competition, the contracts went to the Irisan Shipbuilding Company Limited of Tipa and the Cíle Shipbuilding Company Limited of Redruth, respectively. The new programme also included the acquisition of three Hope-class Hospital Vessels by 2023.

Names of High Renown

  • SDFS Miúil:
  • SDFS Ámóg: SDFS Ámóg, lovingly called Amy or Mommy Amy by her crews, was one of the first vessels of the young SDF-Navy, a Leaba-class Destroyer Tender. Current Holder is a Gabhdán-class Fast Combat Replenishment Ship.
  • SDFS Rímharú: The Tyrannicide was originally the name of a pirate vessel, that came to the Spring Festival of 1718 in Leuda, bringing back displaced and enslaved Selkie - for the first time, the Selkie were visibly at the receiving end of slavery, the tales of those unfortunate individuals soon spreading over the Lands of the Selkie and making the Selkie rethink their positions on slavery - before, the Selkie-Mercenaries hired out to foreign powers did such jobs with gusto, as they were well paid and easy. Rímharú, the Selkie-Term for Tyrannicide, soon became a name of high renown, used for a sloop of the Miodog-class (one of Abhcan's Little Daggers), several smaller vessels under private ownership and was planned for the third unit of the Sealgaire-class, but with its cancellation, it is free again.
  • The Gods: The SDF-Navy names important vessels after the Gods and Goddesses of the Pantheon. Current holders of these names are the six Rhiannon-II-class Frigates, soon to be joined by the Searc-class Frigates.


See: Uniforms of the SDF-Navy


  • Seaman
  • Leading Seaman
  • Operative Seaman


  • Sailor
  • Able Sailor
  • Chief Sailor


  • Ensign: Students of the Officer Training Course at the Naval School.
  • Lieutenant
  • Lieutenant Commander
  • Commander
  • Captain


  • Commodore
  • Vice Admiral
  • Admiral
  • Admiral of the Free Lands


See: Category:Equipment of the SDF
See: Category:Past Equipment of the SDF


See also