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  • Vessel Gross Tonnage

    Anyone happen to know what the vessel gross tonnage is on Mako 260?
    Rick Loszewski[br]Derry, NH

  • #2
    My 25 calculates out just over 5 GRT since tonnage is a volume not weight calculation.

    GT = (.67)xLXBXD / 100

    For your 260 it's .67X26x8.5x4.5 / 100, where the depth is purely a guess on my part, or 6.66 GRT. You need to measure your own depth to confirm.

    Here's a good reference page:

    http://www.usmaritime.us/documents/T...alculating.pdf
    1978 Mako 25 - Blind Hog
    1985 Mako 20c - sold
    Fort Walton Beach, FL
    http://www.classicmako.com/forum/top...TOPIC_ID=42841

    Comment


    • #3
      My 25 calculates out just over 5 GRT since tonnage is a volume not weight calculation.

      GT = (.67)xLXBXD / 100

      For your 260 it's .67X26x8.5x4.5 / 100, where the depth is purely a guess on my part, or 6.66 GRT. You need to measure your own depth to confirm.

      Here's a good reference page:

      http://www.usmaritime.us/documents/T...alculating.pdf
      1978 Mako 25 - Blind Hog
      1985 Mako 20c - sold
      Fort Walton Beach, FL
      http://www.classicmako.com/forum/top...TOPIC_ID=42841

      Comment


      • #4
        Thanks Sailor

        The 260 is 28 feet long. Depth measures 4 feet so it's .67x28'x8.5'x4'/100 = 6.4 ton
        Rick Loszewski[br]Derry, NH

        Comment


        • #5
          Thanks Sailor

          The 260 is 28 feet long. Depth measures 4 feet so it's .67x28'x8.5'x4'/100 = 6.4 ton
          Rick Loszewski[br]Derry, NH

          Comment


          • #6
            Look up the hull weight on the Mako site....

            https://www.makoboats.com/past-model...tBoatYear=1989

            The 89 model was 4,750.
            [br]Captain W[br]1970 Mako 19

            Comment


            • #7
              Tonnage is different than displacement.

              https://www.dco.uscg.mil/Portals/9/D...-09-123757-680

              2. GROSS / NET TONNAGE VS. DISPLACEMENT TONNAGE

              This Guide addresses gross and net tonnage, which relate to vessel volume and appear on a documented

              vessel's Certificate of Documentation (COD). Gross and net tonnage is widely used as the basis for

              vessel regulation and assessment of taxes and fees. Gross and net tonnage is not to be confused with

              displacement or weight tonnage, often expressed in "pounds", "tons" or "long tons".
              Rick Loszewski[br]Derry, NH

              Comment


              • #8
                Tonnage does not refer to weight, even though "tons" is a measure of weight, for marine vessels its about essentially carrying capacity derived when vessels sole purpose on the sea was to carry cargo.
                quote:


                Originally posted by JONESWR


                Look up the hull weight on the Mako site....


                https://www.makoboats.com/past-model...tBoatYear=1989

                The 89 model was 4,750.


                1978 Mako 25 - Blind Hog
                1985 Mako 20c - sold
                Fort Walton Beach, FL
                http://www.classicmako.com/forum/top...TOPIC_ID=42841

                Comment

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