Since 2004 Industrial & Trading Company «LOTTA» is fulfilling subcontract work at JSC «PO «Sewmash»:
- assembly and welding work was carried out to manufacture superblocks No. 1 and No. 4 of the caisson with a total weight of 70,000 tons for the offshore ice-resistant stationary platform «Prirazlomnaya», intended for the development of the oil and gas field of the same name on the shelf of the Barents Sea. Customer «Sevmorneftegaz»;
- in 2006 assembly and welding work on the manufacture of blocks for the jack-up floating drilling rig «Arkticheskaya» was carried out.