Tjeld class
The tjeld-class patrol boat was in Norway designed class of speed boats and motor torpedo boats (norw .: motortorpedobåt), in the United States as a Fast Patrol Boats (almost patrol boats (FPB)) or as PT-speed boat (PT boat, almost ( PTF)). The class is also known as the Nasty class after its so-called prototype .
Building history
The prototype Nasty was built in autumn 1957 at the private initiative and expense of the shipyard owner Toralf Westermoen at his shipyard A / S Westermoen Båtbyggeri og Mek. Verksted in Mandal completed and tested. The type was intended for the coastal defense against invasions of the Norwegian Navy, as a replacement for their war PTs of the Elco class and the British MTBs of the Fairmile D type, which were taken over by the USA . The Nasty was designed by the designer Jan Herman Linge , in close collaboration with Norwegian naval officers who had experience with motor torpedo boats during World War II . The test drives of the prototype convinced the Norwegian naval command, which then commissioned Westermoen Båtbyggeri to build 12 boats. The Nasty itself remained in service until 1974.
The class was named after the first completed boat, KNM Tjeld (P-343), which entered service in June 1960. A total of 42 Tjeld-class boats were built in Norway from 1959 to 1966: 22 for the Norwegian Navy, 14 for the US Navy , four for Greece and two for the German Federal Navy , which they later passed on to Turkey . Six other boats were built under license in the USA for the US Navy from 1968 to 1969, with the keel , stern and other parts imported from Norway.
Technical specifications
The boats had wooden hulls . They were 24.5 m long and 7.5 m wide and had a draft of 2.08 m . Depending on the equipment, their displacement was 66–76 tons . The propulsion system consisted of two 18-cylinder Napier Deltic marine diesel engines with turbochargers, each of 2,308 kW (3150 PS) at 2100 rpm. The maximum speed was 43.5 knots , the range 912 nm at a cruising speed of 20 kn and 747 nm at 38 kn. The armament consisted of four 53.3-cm torpedo tubes , of which the two aft could be exchanged for mine-laying rails, and - in the case of Norwegian boats - a 40-mm Bofors gun for anti-aircraft guns on the aft deck and a 20-mm Oerlikon -Machine cannon on the fore part. The boats that were later taken over by the Norwegian Navy Home Army were initially given a 12.7 mm Browning M2 machine gun instead of the Oerlikon MK , and when they were later modernized, they were each given a 20 mm Rheinmetall MK . The two boats of the German Navy had a second 40 mm Bofors MK instead of the 20 mm MK. The crew consisted of 18 men, on the US boats from 19-21 men. There were seats on the open command post for the commander and the helmsman .
The boats of the class
Norway
All boats were named after birds, fish or marine mammals . When the Hauk class boats were put into service as a replacement for the Tjeld class in 1979 and 1980 , 11 boats were sold to England for further use in 1981, eight were transferred to the reserve or the Navy Home Army (Sjøheimevernet) and one was given away to a charitable organization . The new boats of the Hauk class were given the bird names of the Tjeld class and the Tjeld boats transferred to the reserve or naval home guard were renamed to the names of the Tjeld boats that had been decommissioned and sold. The eight boats transferred to the Navy Home Army formed the 27th MTB flotilla stationed in Karljohansvern ; the flotilla operated with these boats until around 1990 and was officially disbanded in 1993. These last eight boats were sold in 1992 for scrapping or other recycling. Three are still in Norway today, two of them as museum ships .
| boat | renaming | period of service | Remarks |
|---|---|---|---|
| Tjeld (P 343) | Sel (P 343) | 1959-1992 | Renamed in 1979, transferred to the naval reserve and used in the naval home defense. Sold for scrapping in 1992. |
| Skarv (P 344) | 1959-1981 | 1981 sold to England for recycling | |
| Teist (P 345) | 1960-1981 | 1981 sold to England for recycling | |
| Jo (P 346) | 1960-1981 | 1981 sold to England for recycling | |
| Lom (P 347) | 1961-1981 | 1981 sold to England for recycling | |
| Stegg (P 348) | Hval (P 348) | 1961-1992 | Renamed in 1979, transferred to the naval reserve and used in the naval home defense. Sold for scrapping in 1992. |
| Hauk (P 349) | Laks (P 349) | 1961-1992 | Renamed in 1979. Transferred to the naval reserve and used in the naval home defense. Sold for scrapping in 1992. The hull was bought from a private owner in England. |
| Falk (P 350) | 1961-1981 | 1981 sold to England for recycling | |
| Ravn (P 357) | Growl (P 357) | 1961-1992 | Renamed in 1979. Transferred to the naval reserve and used in the naval home defense. Sold for scrapping in 1992. |
| Gribb (P 388) | Dolphin (P 388) | 1961-1992 | Renamed in 1979. Transferred to the naval reserve and used in the naval home defense. Decommissioned in 1992 and intended as a museum ship at the Kværner Båtservice shipyard, but then sold for scrapping. |
| Geir (P 389) | 1962-1981 | 1981 sold to England for recycling | |
| Alder (P 390) | 1962-1981 | 1981 sold to England for recycling | |
| Sel (P 382) | 1963-1981 | 1981 sold to England for recycling | |
| Hval (P 383) | 1964-1981 | 1981 sold to England for recycling | |
| Laks (P 384) | 1964-1981 | 1981 sold to England for recycling | |
| Shark (P 381) | 1964-1992 | In 1980 transferred to the naval reserve and deployed in the naval home defense. Retired in 1992, with plans to keep it as a museum ship in Fredrikstad . | |
| Growl (P 385) | 1964-1981 | 1981 sold to England for recycling | |
| Lyr (P 387) | 1965-1992 | In 1980 transferred to the naval reserve and deployed in the naval home defense. Sold for scrapping in 1992. | |
| Skrei (P 380) | 1966-1992 | In 1980 transferred to the naval reserve and deployed in the naval home defense. Transferred to the Naval Museum in Karljohansvern in 1992 and, due to lack of space, since then a museum ship in Haakonsvern . | |
| Dolphin (P 386) | 1966-1984 | After a private association of the Friends of the Shetland Bus was taken out of service for preservation as a museum ship, the project failed, and the boat then fell into private hands. |
14 boats were built in Norway for the US Navy and put into service with the IDs PTF 3 to PTF 16 for use in Vietnam , where they were used alongside a large number of American PT boats with aluminum hulls. Two of these boats, PTF 3 and PTF 4, were shipped to the USA, the rest to Subic Bay naval base in the Philippines , where they were modified for use in Vietnam ( armed with recoilless guns of the 57mm M18 recoilless rifle, among others ) and then to Đà Nẵng were sent. Six other boats in the class, PTF 17 to PTF 22, were built under license in the USA by John Trumpy and Sons in Annapolis, Maryland and delivered between May 1968 and July 1969.
The boats operated from their base in Da Nang. Their crews were members of the South Vietnamese Navy trained by the US Navy . In addition, they often had 12 South Vietnamese SEAL groups on board. The boats were used to bombard targets close to the coast, for amphibious command operations against transshipment points of the enemy to disrupt supplies and to arrest and destroy North Vietnamese fishing trawlers along the entire Vietnamese coast. Many also took part in the Desoto patrols off the coasts of China , North Korea , the Soviet Union, and North Vietnam.
Six of the 20 boats (PTF 4, PTF 8, PTF 9, PTF 14, PTF 15 and PTF 16) were lost in Vietnam. In January 1970, all remaining PTF boats were removed from the US Navy shipping register and officially designated as "floating equipment". However, with the exception of PTF 13, which was given boat number 80PB6513, they retained their previous Hull numbers until they were finally retired in the late 1970s .
Greek Navy
Four of the Norwegian-built boats were delivered to the Greek Navy , where they are still in service today as patrol boats.
- CP Andromeda (P 196)
- CP Kyknos (P 198)
- CP Pegasus (P 199)
- CP Toxotes (P 228)
German Federal Navy
The German Navy bought two boats built in Norway for testing purposes and put them into service from October 5, 1960 to January 4, 1964 as the Nasty class type 152 Schnellboot . The boats, Hugin (P6191) and Munin (P6192), were subordinate to the 1st Schnellbootgeschwader in Kiel - Friedrichsort . After completion of the testing, however, it was decided that the boats did not meet the expectations of the German Navy for use in the North and Baltic Seas . They were given to Turkey .
Turkish Navy
The two boats tested by the German Navy were handed over to the Turkish Navy in 1964 , where they served for several years.
- TCG Doğan (P-327) (ex Hugin )
- TCG Martı (P-328) (ex Munin )
Individual evidence
- ↑ Westermoen, Toralf (1914-1986) (norw.)
- ^ Elco PT Boat and History
- ^ John Lambert: Fairmile D Motor Torpedo Boat. Conway Maritime Press, rev. ed., 2005, ISBN 978-1-84486-006-7 ; Leonard C. Reynolds: Dog Boats at War: Royal Navy D Class MTBs and MGBs, 1939-1945. The History Press, ISBN 978-0-75245-045-2
- ^ Jan Herman Linge, in Norsk Biografisk Leksikon (norw.)
- ↑ Westermoen Båtbyggeri og Mek. Verksted formed the basis for 1989 formed Kværner Båtservice A / S or the current Umoe Mandal A / S . ( http://www.mandal.umoe.no/WEB/um200.nsf/pages/55E4E607A3 ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and remove it then this note. )
- ↑ John Trumpy & Sons Inc. ( Memento of the original from October 25, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (engl.)
- ↑ http://www.ptfnasty.com/ptfHistory.html
- ↑ http://www.ptfnasty.com/ptfCards.html
