QUARTERDECK MARINE - SurveyorsJohn Yskam. SA  President Quarterdeck Marine, Inc. and Consultants


Hudson Office:      1500 Harbor Blvd. LHYC D-11, Weehawken, NJ 07086 201 247-4888                      
North Office:         137 Magee Road, Ringwood, NJ 07456 973 839-6070                                           
yskamp.john@gmail.com         Fax:   862 200 5004

John Yskamp


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Who We Are

Serving the Marine Community Since 1985

Our service area is concentrated in the North East with much of our efforts in the Northern New Jersey, Jersey Shore, Hudson Valley, New York City and Long Island.  Special assignments have taken us to many states including: Pennsylvania, Florida, New Orleans, Nebraska, Iowa, Kansas, Missouri, California (Los Angeles area) and the US Virgin Islands.  See our Service Area page.


Contact Information

Hudson Office

1500 Harbor Blvd, 11D

Weehawken NJ 07086


North Office

137 Magee Road

Ringwood NJ 07456

E-mail address

Mail to: yskamp.john@gmail.com  


Web address



Office phone

Hudson Office  201 247-4888   

North Office     973 839-6070

Fax                   973 839-0393



  Fast Turn-around

  Real Sea Trials

  Oil Analysis and Interpretation

  Working relationship with Federal and Local Authorities

Key responsibilities



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Last Updated on - 08/08/2017