STS Tenacious at the starting line for the last leg of the STI Historical Seas Festival 2010 from Instanbul to Lavrion.
|Career (United Kingdom)|
|Owner:||Jubilee Sailing Trust|
|Builder:||Jubilee Yard (Merlin Quay), Southampton|
|Laid down:||6 June 1996|
|Launched:||3 February 2000|
|Commissioned:||1 September 2000|
|Tons burthen:||586 tons|
|Length:||54 m (177 ft) hull, 65 m (213 ft) including bowsprit|
|Beam:||10.6 m (35 ft)|
|Draught:||4.58 m (15.0 ft) in summer|
|Sail plan:||Barque (three-masted))|
|Speed:||11 knots (20.37 km/h) under sail, 8 knots (14.82 km/h) under power|
The STS Tenacious is a modern British wooden sail training ship, specially designed in the 1990s to accommodate the disabled. Launched in 2000, it became the largest wooden tall ship built in the United Kingdom in the last 100 years. It is 65 metres (213.25 feet) long, including bowsprit, and it is rigged as a (three-masted) barque with two mizzen gaffs. Its deck is 49.85 metres long, its hull is 54.02 metres long, and it has a beam of 10.6 metres at its widest point. A press release from the Belfast Maritime Festival on June 22, 2006 announced that the Tenacious was "the largest wooden ship still afloat".
The Tenacious displaces about 714 tons (summer draft). Its maiden voyage was on 1 September 2000 from Southampton to Southampton calling at Sark, St Helier and Weymouth. The ship is owned by a UK-based charity, the Jubilee Sailing Trust, which also owns the 42 metre long tall ship STS Lord Nelson (length including bowsprit is 55 metres and waterline length is 37 metres). 
The Tenacious featured in the first episode of Channel 5's Sea Patrol UK, when one of the crew members had fallen ill and needed to be winched into an RAF Westland Sea King and taken to hospital. Due to the height of the masts and rigging, this posed a challenge to the helicopter's pilot and winch crew but the rescue attempt was successful and the crew member survived a potentially fatal condition.
- World’s largest wooden ship berths in Belfast for maritime celebration, press release of Belfast Maritime Festival, organised by Celebrate Belfast and the Port of Belfast, June 22, 2006
- Jubilee Sailing Trust official homepage
- Tenacious — official page on the Jubilee Sailing Trust website