Helwig F. Van Der Grinten

Master Mariner

Licensed U.S. Master, Steam and Motor Vessels


I am semi-retired and continue sailing as a free-lance master, mate and dynamic positioning system operator.  Recent assignments include deep water construction and diving support vessels.


  • Licensed U. S. Master, Steam & Motor Ocean Vessels; any tonnage, all oceans, 7th issue


  • Qualified as an Offshore Installation Manager


  • Certified by the Nautical Institute as a Dynamic Positioning System Operator with over 700 days of accumulated service.


  • Captain, United States Navy, Merchant Marine Reserve, Qualified Submarine Officer, honorably discharged January 2000


  • Experienced Shiphandling Instructor


  • MS in Ocean Engineering


  • BS in Nautical Science


  • Graduate of Merchant Marine Academy, Kings Point, NY


  • Experienced in vessel operations in the Gulf of Mexico, North Sea, Gulf of Alaska, Mediterranean, South China Sea, North Pacific and Indian Oceans.


  • Navigator


  • Published "Pilotage Manual" for Prince William Sound


  • Author of technical manuals and marine industry related articles.


I'm married with a daughter, Roshel. My wife Rosana, a geophysicist, is the one who created this website for me on her spare time.