SS Pinnau

Pinnau (1943)
History
Name	Pinnau (1922–45) Empire Constructor (1945–47) Estkon (1947–59)
Owner	Bugsier Reederei & Bergungs AG (1922–45) Ministry of War Transport (1945) Ministry of Transport (1945–47) J Carlbom & Co (1947–59)
Operator	Bugsier Reederei & Bergungs AG (1922–45) Frank S Dawson Ltd (1945–47) J Carlbom & Co (1947–59)
Port of registry	Hamburg (1922–44) Hamburg (1933–45) London (1945–47) Hull (1947–59)
Builder	Nobiskrug Werft GmbH
Yard number	106
Launched	April 1922
Commissioned	5 August 1922
Identification	Code Letters RCPJ(1922–34) Code Letters DHTG (1934–45) Code Letters GFZX (1945–59) United Kingdom Official Number 180610 (1945–59)
Fate	Scrapped
General characteristics
Type	Cargo ship
Tonnage	1,198 GRT (1922–37) 1,200 GRT (1937–45) 1,201 GRT (1945–59) 638 NRT (1922–36) 617 NRT (1937–45) 616 NRT (1945–59)
Length	250 ft 0 in (76.20 m)
Beam	37 ft 5 in (11.40 m)
Depth	12 ft 8 in (3.86 m)
Installed power	Triple expansion steam engine
Propulsion	Screw propeller

Pinnau was a 1,198 GRT cargo ship that was built in 1922 by Nobiskrug Werft GmbH, Rendsburg, Germany for German owners. She was seized by the Allies in May 1945, passed to the Ministry of War Transport (MoWT) and was renamed Empire Constructor. In 1947, she was sold into merchant service and renamed Estkon. She served until 1959 when she was scrapped.