All HS.Marine’s cranes have been specifically designed and manufactured to work in a marine environment and adopt all the best solutions to make them resistant to the corrosive atmosphere of the marine environment.
All the cranes include:
• Standard HS.Marine’s Treatment
• Powerful rotation utilising slewing ring unit
• 360° Limited rotation (on cranes < 30 tm) with Operator’s stand console outside the crane base with 2 m of hoses and steel cover protection
• 360° Continuous rotation (on cranes > 30 tm) with Operator’s seat console with access ladder on the column and steel cover protection
• Proportional Control valve block (on cranes > 60 tm) complete with high pressure filter
• Hydraulic limiting moment device
• Emergency stop device
• Topping cylinder rod and knuckle cylinder executed in NIKROM 350 material to attain top resistance to the salt environment.

• Telescopic cylinder rods will be built in double chromium top layers with marine execution.
• Stainless steel pipe and pipe nuts.
• Special waterproof sealing rubber hoses and rubber tape on all fittings
• Extensive use of stainless steel for all small plates, supports, etc.
• All not structural bolts are in stainless steel A4 type
• All the springs are stainless steel execution
• All medium and big size of bronze bushings have a greasing point for each bushing
• Stainless steel greasing nipples
• Marine grease protection on all mechanical parts where steel is in contact with steel
• Special sealing of all flanges (gear boxes, slewing rings) and holes where the salt fog can in the long term start corrosion problems
• Transport frame and/or transport boom –rest in welded steel construction