HDMS Vædderen (F359): The Royal Danish Navy's Thetis-Class Sentinel
The HDMS Vædderen (F359) is a specialized ocean patrol vessel serving the Royal Danish Navy. As a member of the Thetis-class, this ship is designed to maintain Danish sovereignty and security across the challenging waters surrounding Greenland and the Faroe Islands. Combining endurance with versatility, the Vædderen serves as both a guardian of national interests and a platform for international cooperation.
Key Facts
- Class: Thetis-class frigate/ocean patrol vessel.
- Primary Role: Sovereignty patrols in the North Atlantic and Arctic.
- Displacement: 3,500 tons.
- Armament: Features a 76-mm OTO Melara Super Rapid gun and anti-submarine capabilities.
- Aviation: Capable of carrying a Westland Lynx Mk90B or an MH-60R helicopter.
Design and Technical Specifications
Built by Svendborg Shipyard Ltd., the Vædderen was laid down on March 22, 1990, and launched later that year on December 21. She officially entered service on June 9, 1992. The vessel is engineered for the harsh environments of the North Atlantic, featuring a length of 112.5 meters and a beam of 14.5 meters.
The ship is operated by a complement of 61 personnel and is identified by the MMSI number 219524000 and callsign OUEW.
| Feature | Detail |
|---|---|
| Length | 112.5 m (369 ft) |
| Beam | 14.5 m (48 ft) |
| Draft | 6 m (20 ft) |
| Displacement | 3,500 tons |
| Complement | 61 |
Armament and Aviation Capabilities
To ensure security and deterrence, the Vædderen is equipped with a diverse array of weaponry. Its primary offensive capability is a 76-mm 62-cal. OTO Melara Super Rapid DP gun. For close-range defense and security, the ship carries seven 12.7 mm heavy machine guns and four 7.62 mm light machine guns.
The vessel is also equipped for anti-submarine warfare (ASW)—the branch of naval warfare that involves hunting and destroying enemy submarines—utilizing a depth charge rack and MU90 Advanced Lightweight Torpedoes.
Aviation support is critical for long-range patrol. The Vædderen originally carried a Westland Lynx Mk90B; however, from approximately 2016, this was updated to the MH-60R helicopter.
Operational History and Global Missions
Beyond standard patrol duties, the Vædderen has participated in several high-profile scientific and military operations. In August 2006, after a refit at Karstensens Shipyard A/S in Skagen, the ship sailed from Copenhagen to participate in the Galathea 3 scientific expedition. Following the completion of this mission, the vessel returned to its primary role as an inspection ship.
The ship frequently collaborates with international allies. In August 2010, the Vædderen and HDMS Knud Rasmussen joined Canadian and American vessels for Operation Nanook 2010, conducting exercises in Baffin Bay and the Davis Straits.
More recently, in June 2025, the Vædderen represented Denmark in Operation Cutlass Fury. This biennial anti-submarine warfare exercise took place off the coast of Halifax, Nova Scotia, alongside the Royal Navy, the Royal Canadian Navy, and the United States Navy. Following the exercise, the ship participated in Halifax's international fleet week, offering public tours to civilians.
Frequently Asked Questions
What is the primary mission of HDMS Vædderen?
The primary mission of HDMS Vædderen is to exercise Danish sovereignty in the waters surrounding Greenland and the Faroe Islands.
Which helicopter does the Vædderen currently use?
While it previously carried the Westland Lynx Mk90B, the vessel has utilized the MH-60R since approximately 2016.
What was the Galathea 3 expedition?
Galathea 3 was a scientific expedition that the Vædderen participated in starting in August 2006 after undergoing a refit.
What is Operation Cutlass Fury?
Operation Cutlass Fury is a biennial anti-submarine warfare exercise involving the navies of Denmark, the United States, the United Kingdom, and Canada.
Who built the HDMS Vædderen?
The ship was constructed by Svendborg Shipyard Ltd. and entered service in June 1992.