HSS 1500 was the name of a model of Stena HSS craft developed and originally operated by

Stena Line Stena Line is a Swedish shipping line company and one of the largest ferry operators in the world. It services Denmark, Germany, the United Kingdom, Ireland, Latvia, the Netherlands, Norway, Poland and Sweden. Stena Line is a major unit of Ste ...

on European international ferry routes. The vessels were the largest

high-speed craft A high-speed craft (HSC) is a high-speed water vessel for civilian use, also called a fastcraft or fast ferry. The first high-speed craft were often hydrofoils or hovercraft, but in the 1990s catamaran and monohull designs become more po ...

in the world. Several design patents were registered to Stena Line in the development of the HSS. Three vessels were ultimately completed in 1996 and 1997. The first of the class, ''Stena Explorer'', entered service in April 1996, serving the

Holyhead Holyhead (,; cy, Caergybi , "Cybi's fort") is the largest town and a community in the county of Isle of Anglesey, Wales, with a population of 13,659 at the 2011 census. Holyhead is on Holy Island, bounded by the Irish Sea to the north, and is ...

Dún Laoghaire Dún Laoghaire ( , ) is a suburban coastal town in Dublin in Ireland. It is the administrative centre of Dún Laoghaire–Rathdown. The town was built following the 1816 legislation that allowed the building of a major port to serve Dubli ...

route from 1996 to 2014. Two others had served

Stranraer Stranraer ( , in Scotland also ; gd, An t-Sròn Reamhar ), also known as The Toon, is a town in Dumfries and Galloway, Scotland. It is located in the historical parish of Inch in the historic county of Wigtownshire. It lies on the shores of L ...

Belfast Belfast ( , ; from ga, Béal Feirste , meaning 'mouth of the sand-bank ford') is the capital and largest city of Northern Ireland, standing on the banks of the River Lagan on the east coast. It is the 12th-largest city in the United Kingdo ...

and

Harwich Harwich is a town in Essex, England, and one of the Haven ports on the North Sea coast. It is in the Tendring district. Nearby places include Felixstowe to the north-east, Ipswich to the north-west, Colchester to the south-west and Clacton-on- ...

Hook of Holland Hook of Holland ( nl, Hoek van Holland, ) is a town in the southwestern corner of Holland, hence the name; ''hoek'' means "corner" and was the word in use before the word ''kaap'' – "cape", from Portuguese ''cabo'' – became Dutch. The English t ...

."Fast Ferries"
by Ian Manser, in ''The Global Change?'', International Ports Congress 1999, page 43. Online at

Google Books Google Books (previously known as Google Book Search, Google Print, and by its code-name Project Ocean) is a service from Google Inc. that searches the full text of books and magazines that Google has scanned, converted to text using optical c ...

. On the 200-kilometre Hoek–Harwich route, the Stena HSS had cut the crossing time in half by cruising at 41 knots."A Ferry for the Future"
''Bonaire Reporter'', 2001-05-02. Retrieved 2011-10-25.

Design and construction

''Stena Explorer'' was constructed by

Finnyards STX Finland Oy, formerly Aker Yards Oy, was a Finnish shipbuilding company operating three shipyards in Finland, in Turku, Helsinki and Rauma, employing some 2,500 people. It was part of STX Europe, a group of international shipbuilding compan ...

in Rauma,

Finland Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of B ...

. The HSS 1500 is a semi-

small-waterplane-area twin hull A small waterplane area twin hull, better known by the acronym SWATH, is a catamaran design that minimizes hull cross section area at the sea's surface. Minimizing the ship's volume near the surface area of the sea, where wave energy is locate ...

(SWATH)

catamaran A Formula 16 beachable catamaran Powered catamaran passenger ferry at Salem, Massachusetts, United States A catamaran () (informally, a "cat") is a multi-hulled watercraft featuring two parallel hulls of equal size. It is a geometry-stab ...

, and was designed with the aim of providing a comfortable and fast service. Power is provided by four

GE Aviation GE Aviation, a subsidiary of General Electric, is headquartered in Evendale, Ohio, outside Cincinnati. GE Aviation is among the top aircraft engine suppliers, and offers engines for the majority of commercial aircraft. GE Aviation is part of the ...

gas turbine A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the directi ...

s in a twin

COGAG Combined gas turbine and gas turbine (COGAG) is a type of propulsion system for ships using two gas turbines connected to a single propeller shaft. A gearbox and clutches allow either of the turbines to drive the shaft or both of them combined. ...

configuration. The vessels employ four

Kamewa AB Karlstads Mekaniska Werkstad (''trans.'' Karlstad Mechanical Works Ltd), known as Kamewa, was a Swedish manufacturing company in the city of Kristinehamn. Kamewa started as a brand name of the controllable-pitch propellers manufactured by KMW ...

waterjets for propulsion. The HSS class of ferries were designed to allow quick turnarounds at port, in 30 minutes or less. A specially designed

linkspan A linkspan or link-span is a type of drawbridge used mainly in the operation of moving vehicles on and off a roll-on/roll-off (RO-RO) vessel or ferry, particularly to allow for tidal changes in water level. Linkspans are usually found at ferry t ...

for the Stena HSS provides ropeless mooring and allows quick loading, unloading and servicing. Vehicles are loaded via two of the four stern doors and park in a "U" configuration. When disembarking, vehicles drive straight off via the other two doors.

Ships

* ''Stena Explorer'' (now: ''One World Karadeniz'') - Sold for use as office space in Turkey * ''Stena Voyager'' - scrapped in Sweden * ''Stena Discovery'' (later: ''HSS Discovery'') - scrapped in Turkey

References

{{Reflist High-speed craft