Lifting of a boat by Mayer and Scheffknecht

Monday morning at 7:30 AM at the Hartmann shipyard in Hard (AT), Mayer from Burgberg (DE) and Scheffknecht from Lustenau (AT) will lift a boat into the water.

This boat, the "Kormoran" (German for great cormorant) was recently refurbished on the Hartmann yard and could be launched back into the water. The boat weights around 70 tonnes and is mainly used for research activities on the Lake of Constance.

Scheffknecht was operating both of her largest cranes, the Tadano ATF 220G-5 and the Liebherr LTM 1130-5.1. The counterweight of these cranes are transported in a frame that is relocated by container trucks.

Because the required lifting capacity were missing by Scheffknecht, some additional force was asked by Mayer who deployed their Tadano ATF 400G-6.

Because the shipyard is very constrained the cranes were positioned very near to each other.

From above we have the best overview on the job. The Tadano ATF 220G-5 and the Liebherr LTM 1130-5.1 will lift the rear side of the boad, both hooks are attached to the same lifting sling. The Tadano ATF 400G-6 of Mayer will lift the front part of the boat.

In the meanwhile the boat is hanging in the cranes.

The ATF 400G-6 has the main boom 35.2 meters extended, the ATF 220G-5 has the boom 38.3 meters extended and the LTM 1130-5.1 is working with a 30.1 meter boom.

Mayer is lifting here approx. 44 tonnes, while both Scheffknecht cranes lift each about 15 tonnes.

The "Kormoran" is floating again in the water after a renovation of 2 months. Mayer is working here on a 22 meter radius and Scheffknecht at 22 (ATF 220G-5) and 20 meters (LTM 1130-5.1).

Both Scheffknecht cranes were erected with the full counterweight, 42 tonnes for the LTM 1130-5.1 and 71 tonnes for the ATF 220G-5. The Mayer crane was fitted with 118 tonnes of counterweight.

The Tadano ATF 220G-5 of Scheffknecht is the largest crane of the company.

Shortly after 10 AM is the job already done, the cranes can be dismantled.

At 12 PM is the Tadano ATF 400G-6 of Mayer already prepared for the trip back to Germany, the cranes of Scheffknecht would be used on the yard for some other smaller lifting activities. A very interesting lifting job!

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