Herman the German (crane vessel)

Titan in Panama (2011)
History
Name:
  • Titan (1996–present)
  • YD-171 (1946–1994)
  • Schwimmkran Nr. 1 (1941–1945)
Ordered: c.1937
Builder: Demag A.G.
Completed: 1941
Acquired: 1996
In service:
  • Panama Canal Authority (1996–present)
  • United States Navy (1946–1994)
  • Kriegsmarine (1941–1945)
Homeport: Panama Canal Zone
Status: In service
General characteristics
Class and type: Floating barge crane
Tonnage: approx. 5000
Length: 204 feet (62 m)
Beam: 108 feet (33 m)
Height: 374 feet (114 m) above water line to top of crane
Draught: 10 feet (3 m)
Installed power: 3× diesel generators, 2400 KVA total
Propulsion: azimuthal thrusters
Speed: 5.8 knots (10.7 km/h; 6.7 mph) forward, 4.6 knots (8.5 km/h; 5.3 mph) astern
Crew: 3 officers, 20 men

Titan, better known by its former nickname Herman the German (US Navy designation YD-171), is a large floating crane currently serving in the Panama Canal Zone performing heavy lifts for lock maintenance. Prior to its move to Panama in 1996, the crane was based at the Long Beach Naval Shipyard (LBNSY) from the end of World War II until the closure of LBNSY in 1995. It was seized from the German Kriegsmarine following the end of World War II as part of war repatriations. The crane was built by Demag Cranes AG as Schwimmkran nr. 1 in 1941 for the Kriegsmarine, where it had served in the Baltic Sea tending German U-boats.

The crane was one of four sister ships, two of which are still afloat and in service.

History

Origins

Schwimmkran nr. 1 was built by Demag AG in Bremerhaven for the Kriegsmarine.[1] It was captured along with a sister ship by British forces at Kiel.[2]

Herman the German (YD-171)

"Herman the German" (YD-171) at Long Beach NSY in 1957.

"Herman the German" was seized as a war prize following the end of World War II. "Herman" was dismantled and transported across the Atlantic through the Panama Canal to Long Beach, where it subsequently served at the Long Beach NSY from 1946 (following its reassembly) to 1994 (when the shipyard was closed). YD-171 was reassembled on-site by ex-Kearsarge, a former battleship converted to a large floating crane.

Panama Titan

Following the closure of the shipyard, the crane was sold to the Panama Canal Commission and it was transported on the semi-submersible ship Sea Swan ( IMO number: 8001000) in 1996 to the Panama Canal Zone, where it currently serves as the floating crane Titan.[3]

Selected service history

Over the years, "Herman the German" performed numerous notable heavy lifts, including:

Design

The jib is equipped with a level luffing linkage which keeps the main hook at approximately the same horizontal level through its operating radius.

Capacity

Animation of main and jib boom articulation

Titan is a large self-propelled crane vessel with the tip of its main boom standing at 374 feet (114 m) above the typical water line and a lifting capacity of 385 short tons (349 t).[1] In 1957, it was claimed to be the largest floating crane in operation.[5] Its rated capacity is 350 tonnes (340 long tons; 390 short tons) at up to 114 feet (35 m) from the center of rotation; the lift capacity drops to 50 tonnes (49 long tons; 55 short tons) at 210 feet (64 m) from center, and a single rotation about its pedestal takes 10 minutes.[2]

Sister ships

Of the four Schwimmkräne built by Demag, one was destroyed during World War II by bombs, and the remaining three were seized by the Allies as war reparations. One went to the Americans, and was transported to Long Beach, where it was renamed YD-171.

Hamburg Schwimmkran

The crane stationed at Hamburg served in the Blohm & Voss shipyards and was presumed to be damaged beyond repair during the July 1943 Operation Gomorrah bombing raids. It was reportedly raised after the war and rebuilt with a lower capacity, eventually serving Hamburger Hafen & Logistik AG (HHLA) as HHLA III ( MMSI number: 211339980).[6]

British Schwimmkran

The crane eventually seized by the British was initially stationed at Gdynia, then moved to Denmark in 1943–44 to raise scuttled Danish Navy ships. It was subsequently moved back to Gdynia, then Kiel, where it was seized by the British Army at the conclusion of the war. Later, it was sold to France, but it capsized and sank in the North Sea approximately 60 kilometres (37 mi) off the coast of Denmark while under tow on 25 June 1951. It was being towed without disassembling the heavy mast structures.[6]

Soviet Schwimmkran

A partially-assembled crane was sent to the Soviet Union. It had been ordered by the Soviet government when the governments of Germany and the Soviet Union were friendly,[2] and was reportedly sent to Leningrad, where the Demag technicians sent with the crane to help assemble it were recalled before it could be completed. The partially-assembled structure served as a artillery spotting tower.[6] It was presumed lost after the war until it was spotted in 2015 working in the Admiralty Shipyard at Saint Petersburg.[1]

References

  1. 1 2 3 Hoppe, Jon (19 May 2016). "Herman the German". Naval History Blog. U.S. Naval Institute. Retrieved 18 November 2016.
  2. 1 2 3 "Huge Floating Crane Assembled" (PDF). All Hands. No. 361. US Navy Bureau of Naval Personnel. March 1947. p. 21. Retrieved 18 November 2016.
  3. ↑ "Titan Crane Re-assembly". Argonautics Marine Engineering, Inc. 1996. Retrieved 17 November 2016.
  4. ↑ Lockett, Brian (1980–1982). "Howard Hughes' giant Flying Boat - Popularly called the Spruce Goose (Page 1)". Air-and-Space. Retrieved 17 November 2016.
  5. ↑ "Ship's Service—By the Yard" (PDF). All Hands. No. 489. US Navy Bureau of Naval Personnel. October 1957. pp. 2–9. Retrieved 17 November 2016.
  6. 1 2 3 halina (8 September 2013). "Schwimmkräne der Marine, Part 2". Marine Archiv. Archived from the original on 20 November 2016. Retrieved 19 November 2016.
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