CMS-Geotech Ltd

  • Home

  • Services

  • Equipment Hire

  • News

  • Contact

  • Gallery

  • Careers

  • Blog

  • More

    Vibrocore, Sediment Sampling & Marine CPT

    Contact us on +44 (0)1502 514641

    email survey@cms-geotech.co.uk

     

    Unit 4

    Brooke Marine Business Park

    Heath Road
    Lowestoft
    Suffolk

    NR33 9LZ

     

     

     

     

     

     

     

    FOLLOW US:

    • LinkedIn App Icon
    • w-facebook
    • Twitter Clean
    • YouTube Basic Square

    Mini Hamon Grabs

     

    The CMS-Geotech 0.1m² Hamon Grab is ideal for obtaining bulk samples of seabed sand and gravel as well as for sampling benthic macrofauna This smaller grab was introduced several years ago and approved by CEFAS in order to allow acceptable benthic samples to be collected using smaller vessels.

     

    In addition a 0.1m² sample area is a standard convention used in many benthic sampling applications. The Hamon Grab is a box shaped sampling scoop mounted in a triangular frame. Upon contact with the seabed, tensioned wires are released, which causes the sampling bucket to pivot through 90º pushing seabed sediment into the bucket. On completion of its travel the open end of the bucket comes against a rubber sealed steel plate which stops the sediment escaping during recovery. The reason it is called a 0.1m² Hamon Grab is because the bucket size is such that the area of seabed sampled during its travel is approximately 0.1m². The depth of sample penetration can be up to 20cm.

     

    On recovery the grab is landed onto a rectangular base from where access can be gained to the inside of the bucket via an inspection window. Whilst in the stand the grab sample can then be easily emptied into a sampling container located under the bucket.

    Hamon Grab 0.1m
    Hamon Grab 0.1m

    ALL EQUIPMENT

     

    Neptune 5000 CPT

     

    Standard Vibrocorers

     

    High Powered Vibrocorers

     

    USNEL Box Corer

     

    Gravity & Piston Corers

     

    Hydraulic Clam Shell Grab

     

    Single Van Veen Grabs

     

    Double Van Veen Grabs

     

    Mini Hamon Grabs

     

    Standard Hamon Grabs

     

    Single Day Grabs

     

    Double Day Grabs

     

    Constant Tension Winch

     

    Beam Trawls