|The main dimensions:|
|Description||Prior to conversion||After conversion|
|Length o.a.||53,60 m||60,40 m|
|Length b.p.||47,20 m||60,40 m|
|Breadth moulded||11,00 m||11,00 m|
|Height to the main deck||5,60 m||5,60 m|
|Height to the shelter-deck||8,00 m||8,00 m|
|Drought of a light ship||3,50 m||3,50 m|
A cylindrical insert of 10,20 m long, that was made earlier, has been used to lengthen this vessel. After the ship was placed on the floating dock, the propeller and its shaft were dismantled, as well as the rudder and the Kort-nozzle. Then she was cut into two sections. The stern section has been moved away from the bow section with the use of pneumatic powered hoist. Thereafter, the floating crane brought and lowered in place the ready-made cylindrical insert, directly in between the two spreaded away halfs of the ship. Thereafter, an insert was joined to the bow and stern sections and welded.
Earlier, when two parts of a cut vessel were pulled out one from the other, and prior to placing an insert, the ship’s main engine, as well as the auxiliary engine of the port side were transported out of the hull while it still remained cut open (later the auxiliary engine was mounted in the cargo hold). Then, to give a better access for works carried out in the engine room, the bulky units and some other large parts of equipment had to be taken out the same way, as they were too big to use the engine’s room hatchway.
After main works of the hull lengthening were completed, the new bottom section of the hull’s engine room area with the foundations made ready under the main engine as well as under the reduction gear and for the generator set, and with the stern bow-thruster tunnel ready-installed, has been welded to the still open bottom of the hull, finally closing it. Then, the stern cage and the fishing nets room welding were completed. The Kort-nozzle, the stern frame and the shaft line plus propeller, the rudderstock and the rudder blade have been installed. Thereafter, she was brought back on water. Then the new units such as the reduction gear, generator set and the main engine have been moved inside the vessel through the transportation opening in the side shell plating, and then installed.
The conversion included also the forecastle deck lengthening by 3m, measured in direction to the stern. A new navigation lights mast has been installed at forecastle. The existing shelter deck cranes were repositioned and the additional crane was mounted on starboard shelter deck. Additionally, conversion included: the fishing nets compartment, lifeboats deck and the part of the portside superstructure plus some of the bottom tanks.
All steel constructions and sections were built with ships’ steel of A Class used; the works were carried out under supervision of the Classification Society DNV. All technical drawings, documentation for ballasting and trimming, and the documentation of special devices such as transportation eyes for the heavy engine room units and equipment, as well as for the lifting eyes on an insert have been prepared by the Projects’ Technical Service Department of SHIPREPAIR YARD “NAUTA” S.A., in Gdynia.