NAVYPEDIA

Photo

Weilheim 1980

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Göttingen	M1070		Burmester Werft, Bremen		1.4.1957	31.5.1958	minehunter 1.1979, to Latvia 9.1997
Koblenz	M1071		Burmester Werft, Bremen		6.5.1957	8.7.1958	minehunter 6.1978, to Lithuania 6.1999 (Sūduvis)
Lindau	M1072		Burmester Werft, Bremen		16.2.1957	24.4.1958	minehunter 2.1978, to Estonia 10.2000 (Sulev)
Schleswig	M1073		Burmester Werft, Bremen		2.10.1957	30.10.1958	Troika leader 3.1981, to South Africa 9.2000 (Tshwane)
Tübingen	M1074		Burmester Werft, Bremen		12.8.1957	25.9.1958	minehunter 3.1978, stricken 6.1997
Wetzlar	M1075		Burmester Werft, Bremen		24.6.1957	20.8.1958	minehunter 10.1978, stricken 6.1995
Paderborn	M1076		Burmester Werft, Bremen		5.12.1957	16.12.1958	Troika leader 9.1981, to South Africa 6.2000 (Mangaung)
Weilheim	M1077		Burmester Werft, Bremen		4.2.1958	28.1.1959	minehunter 7.1978, stricken 6.1995
Cuxhaven	M1078		Burmester Werft, Bremen		11.3.1958	11.3.1959	minehunter 6.1979, to Estonia 2.2000 (Wambola)
Düren	M1079		Burmester Werft, Bremen		12.6.1958	22.4.1959	Troika leader 11.1983, to South Africa 9.2000 (Kapa)
Marburg	M1080		Burmester Werft, Bremen		4.8.1958	11.6.1959	minehunter 6.1979, to Lithuania 5.2000 (Kuršis)
Konstanz	M1081		Burmester Werft, Bremen		30.9.1958	23.7.1959	Troika leader 5.1982, to South Africa 9.2000
Wolfsburg	M1082		Burmester Werft, Bremen		10.12.1958	8.10.1959	Troika leader 3.1982, to South Africa 9.2000 (Tekwini)
Ulm	M1083		Burmester Werft, Bremen		10.2.1959	7.11.1959	Troika leader 11.1981, to South Africa 9.1999
Flensburg	M1084		Burmester Werft, Bremen		7.4.1959	3.12.1959	minehunter 8.1972, stricken 6.1991
Minden	M1085		Burmester Werft, Bremen		9.6.1959	22.1.1960	minehunter 5.1978, to Georgia 12.1997 (აეტი [Ayeti])
Fulda	M1086		Burmester Werft, Bremen		19.8.1959	5.3.1960	minehunter 1969, stricken 3.1992
Völkingen	M1087		Burmester Werft, Bremen		20.10.1959	21.5.1960	minehunter 5.1979, to Latvia 3.1999 (Namejs)

Technical data

Displacement standard, t	362
Displacement full, t	380
Length, m	M1070-1075: 42.0 wl 45.0 oa M1076-1087: 42.0 wl 45.6 oa
Breadth, m	8.00
Draught, m	2.50
No of shafts	2
Machinery	2 Maybach MD871 diesels
Power, h. p.	4000
Max speed, kts	17
Fuel, t	diesel oil 42
Endurance, nm(kts)	1950(12)
Armament	1 x 1 - 40/70 Bofors 315, 4 DCR, mines, mechanical, acoustic and magnetic minesweeping gear
Electronic equipment	TRS-N or Kelvin Hughes 14/9 radar, DSQS-11 sonar
Complement	45

Standard scale images

Graphics

Project history

The Type 320 coastal minesweepers were built under the first naval programme and were a German version of the American-designed NATO standard AMS/MSC type. They were built of wood and non-magnetic materials. The first unit, Lindau, was the first ship to be built for the Federal German Navy. After completion of the first six boats it turned out that the extremely high bridge structure affected stability, so the next units were built with one deck less in the bridge; the first boats were modified to the same bridge. Another problem was the stern section, the boats having an upright transom stern, which resulted in insufficient working space on the poop, so the hulls were enlarged by the addition of a stern compartment. During the same refit all boats received a fixed bulwark from bow to stern, the hull plating in the midship section was reinforced, an 18t lead keel and bilge keels were added. Aft of the funnel an ABC proofed space was erected and the original loading derricks abreast the funnel were replaced by cranes.

In 1968-1969 Fulda was converted to a minehunter as was Flensburg in 1970-1972. Instead of the original sonar equipment they received special minehunting sonar Type 193M, the minesweeping equipment was removed ,as mines were now detected and deactivated by scuba-divers. The forecastle superstructure was extended aft. To improve manoeuvrability they were equipped with retractable Schottel-propellers in the transom (in fact, powerful electric outboard motors). This propulsion permits running at extremely slow speeds or manoeuvring on the spot. Between 1976 and 1979 a further ten boats were modified to similar standards with the exception of the Schottel propulsion, in place of which they received a special gearing on the shaft to produce the same manoeuvrability. On the quarterdeck they received a hydraulic telescoping crane and two PAP 104 (Poisson Auto Propulse) working in connection with the minehunting sonar Type 193M. Later, Fulda and Flensburg were also modified to the same standards, but retained their Schottel propulsion. They were distinguished as the Types 331A (Fulda, Flensburg) and 331B (other minehunters).

From 1979 to 1983 the remaining six units were converted to control ships for the 'Troika' system, being designated Type 351. The Troika system consists of a radio control minesweeper of the Type 351 and three self-propelled drones. The drones were of the HFG-F 1 type and were named Seehund 1-18. All eighteen Seehunds formed a pool from which craft were drawn as necessary.

The system was introduced after a year of experiments and trials with Niobe and the prototype drones Walross and Seekuh 1-3.

Modernizations

1958-1959, Göttingen, Koblenz, Lindau, Schleswig, Tübingen, Wetzlar: bridges were lowered as on later ships

1960-1964, all: hulls were lengthened by 2.1m (387/402t, 43.5m wl 47.1m oa)

1969, Fulda; 1972, Flensburg as minehunters Type 331A: - minesweeping gear, DSQS-11 sonar; + diving equipment, type 193M sonar, retractable Schottel propellers in the transom

1978, Koblenz, Lindau, Tübingen, Wetzlar, Weilheim, Minden; 1979, Göttingen, Cuxhaven, Marburg, Völkingen as minehunters Type 331B: - minesweeping gear, DSQS-11 sonar; + 2 PAP-104 minehunting USV, diving equipment, type 193M sonar

1979?, Fulda, Flensburg: + 2 PAP-104 minehunting USV

1981, Schleswig, Paderborn, Ulm; 1982, Konstanz, Wolfsburg; 1983, Düren as 'Troika' leaders type 351 of minesweeping drones: - minesweeping gear; + control equipment for 3 Seehund drone minesweepers

Naval service

No significant events.