HMS Sealion explained

HMS Sealion was the name of several ships and at least one land base of the Royal Navy.

• - an S-class submarine active during World War II
• - a Porpoise-class submarine of the Cold War period
• The Royal Navy's name for RAF Ballykelly, Northern Ireland. The Joint Anti-submarine School was located there along with several Fleet Air Arm units.^{[1] [2]}

Notes and References

1. Web site: Royal Navy Air Stations in the UK . fleetairarmarchive.net . 2008-11-08 . https://web.archive.org/web/20081017180110/http://www.fleetairarmarchive.net/Aircraft/Airstations/FAAAirStationsHomepage.htm . 2008-10-17 . usurped .
2. Web site: AAC Ballykelly . helis.com . 2008-11-08.