Metric units


Gredo

Status: Steaming

Owner: G Umlauf + others

Area: Italy


Hull

Tug. Construction: Steel.
Hull model: Tug
Built 1916 by Bodan Werft Kressbronn at Lake Constance, Germany
LOA: 51' 2", Beam: 10' 8", Draft: 2' 11", Displacement: 32120 lbs.
Originally riveted steel, later clad in steel plate.

Boiler

DALUWA return tube with side furnace Designed by Koch & Reitz,
Built 1958 at Hannover, Germany
Fuel: Wood/coal, Pressure: 118 psi, Output: 1100 lbs/hr,
welded construction,
non-condensing, injector, whistle,
The boiler is non-condensing with feed water taken directly from the lake via two steam injectors. Two turbine 24volt electric generators are also fed by the boiler. We mainly burn wood rather than coal because of its availability, which means the stoker's job is almost continuous!

Engine

Twin.
Built 1916 by Ardeltwerke Eberswalde at Germany
Power: 62 HP
A simple vertical twin cylinder, 3 bearing, slide valve engine operating with saturated steam on an open cycle. Ardeltwerke specialised in steam engines for cranes. Located in former East Germany it was heavily bombed in World War II so detailed history is difficult to find.

Propeller

Bronze, 3 blades, Right Hand,

History

Gredo, or "Christ" as she was known then, was constructed in 1916 with a completely wooden superstructure. She operated until 1945 by the Meno navigation company as a tug in the river port of Dortmund. She was renamed Gredo in 1946 by the then owner, a name derived from the names of the daughters; Grethel and Dora. Gredo was then operated for many years as a tug by the Mannheim and Karlsruhe navigation company, then in the 1970's she finished her final working days with the Preuss company of Andernach pulling barges. After years of neglect she was bought in 1986 and renovated by the naval shipyard in Bingen. In this period the superstructure was completely replaced in steel. In 2007 a group of international scientists and engineers 'saved' her from demise and transported her to Lake Maggiore in northern Italy. Mistakenly we believed she would steam straight away! After a further five and a half years of hard work and toil she was finally launched in July 2012 and we have been enjoying sailing her on the lake ever since with the goal of steaming to Switzerland some day.


Added to the register: 2014.11.20. Last Modified: 2017.04.19.


One of our first outings

Photos


As Gredo arrived in 2007


View taken from Ispra looking north