Stern tube seal being parts of machines; shaft seals being parts of machines; bulkhead seals being parts of machines; shaft bearings being parts of machines, especially intershaft bearings; circulating pumps, oil coolers and water coolers as accessory parts for stern tube seals, shaft seals and shaft bearings; Seals, especially stern tube seals; shaft seals and bulkhead seals; rudder shaft seals; Installation, maintenance and repair of ship machines; mechanical service support in the field of production in the nature of installation, installation, maintenance, restoration and repair of ship machines; [ Ships, structural parts and replacement parts therefor; parts of ships, namely, shaft passages in the nature of propeller shafts for ships; parts of ships, namely, stern tubes as shaft passages in the nature of propeller shafts for ships; parts of ships, namely, deflectors as protection for propulsion components against fishing nets ]; Construction and technical planning, namely, in the field of design and development of ships and structural parts of ships; scientific and technological services as well as research, namely, in the field of design and development of ships and structural parts of ships