High-speed Sea Service or Stena HSS was a class of high-speed craft developed by and originally operated by Stena Line on European worldwide ferry routes. Till 2011, two similar 1500 passenger variations had been in operation on routes throughout the Irish Sea, whilst a smaller, 900 passenger version operated a route throughout the Kattegat. The latest of the craft was renamed HSS Discovery after being sold to a ferry company in Venezuela throughout 2009. The causes cited for the alternative by conventional ferries had been decreasing passenger patronage, coupled with escalating gas prices.
Routes
In 2015, Stena Explorer ceased to operate service between Dún Laoghaire and Holyhead. Two HSS 900 vessels were initially ordered, but following bankruptcy of the shipyard the place they have been constructed, the second was scrapped at only 30% full. This was to deliver bunker gasoline on board, she then finally left for South America on 1 October 2009.

- Stena Explorer, Stena Voyager and Stena Discovery were constructed to operate on the Irish Sea with Stena Carisma constructed for Scandinavian use.
- The HSS service was changed with twice daily – at some point, one night – sailings on a pair of traditional tremendous ferries.
- The reasons cited for the substitute by standard ferries had been decreasing passenger patronage, coupled with escalating fuel prices.
- Several patents have been registered to Stena Line within the development of the HSS, and 4 vessels were completed between 1996 and 1997.
Withdrawal Of Stena Discovery In 2007
In addition to passenger visitors, the HSS service is believed to have been carrying round 25,000 items of freight per year – about 15% of the one hundred sixty five,000 models that Stena Line transport across the North Sea yearly. The Stena Hollandica and Stena Britannica vessels now accept foot-passengers and have been each stretched to 240 metres in length on the Lloyd Werft shipyard in Germany within the spring of 2007. The HSS service was replaced with twice every day – at some point, one evening – sailings on a pair of traditional tremendous ferries. Up until November 2008 and as of August 2014, Stena Explorer had been making two return trips to Dublin per day, at a quicker advertised speed of ninety nine minutes.
Withdrawal Of Stena Discovery In 2007
Stena Discovery was managed by Stena Northern Marine Management, who dry docked her in April 2009 for maintenance earlier than sale to the Venezuelan company. Taking a route by way of Dover and the Isle of Wight she arrived in Belfast, Northern Eire on 24 January 2007, pending use as spare components or potential sale. In 2016 Stena Explorer was bought and exported to Turkey to be transformed right into a floating office after spending a time frame laid up in Holyhead. As of November 2019, one vessel is laid up (Stena Carisma in Gothenburg, Sweden, while in 2013 Stena Voyager (on the Belfast-Stranraer route between 1996 and 2011) was sent KSS AUTOS to Landskrona, Sweden to be scrapped.