Author Topic: Total height, width and other dimensions (for garage doors, parking, usage etc)  (Read 6880 times)

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A variety of size-related questions come up, with most people wondering about things like waterline, freeboard, interior freeboard, height and width required for a garage door ...on and off a trailer, etcetera.  In light of those questions, here are some answers that should help (noting that the design waterline is at standard displacement ...1/2 fuel, typical crew, gear, equipment, etc):

  • Waterline at the stern, typical displacement (3800-4000 lbs total): 4 inches (add about an inch for each additional 650 lbs or so)
  • Total hull draft, including bottom strake but not including motor skeg (same load): about 12 inches
  • Exterior freeboard (waterline to sheer deck): about 31-1/2 inches measured at the lowest point near the stern
  • Interior freeboard (main deck to sheer deck, at stern): about 28-3/4 inches
  • Total boat width: 8 feet, 5 inches, at widest point, measured at the sheer
  • Total boat height (off a trailer): 7 feet 9 inches (Rockport, Newport), 8 feet 7 inches (Prince Rupert w/visor)
  • Hull height from bottom of keel strake to top of cuddy roof:  About 6 feet 7 inches
  • Total height when on a trailer: 9 feet 5 inches (Rockport, Newport), 10 feet 3 inches (Prince Rupert w/visor)
  • Total width on trailer: MOST trailers will not be wider than the boat (see boat width above)

Total height of the boat depends on whether or not you add rocket-launcher rod holders, rafts, radar, antennae, and other items to the top of the boat, and how tall you choose to make your visor on roofs such as on the Prince Rupert (or even the Newport if you add a tugboat-type visor to it).  Total height on a trailer depends partially on the trailer that you select, and the above assumes that the boat's keel will be off the ground by about 19" or so for a typical trailer that has 14" trailer wheels.  Total width of the boat itself is accurate given you apply rubrails 3/4" thick as specified, but total width on a trailer depends on your trailer selection, fenders, etcetera.  The measurements above are intended to be approximate in order for you to do appropriate planning.  For example, I would not personally choose a new garage door of less than 11' high by 8' wide or so in order to allow a boat of typical configuration to slide through it on a trailer, and even that would require radar on a pedestal that can be removed or hinged forward.  You CAN get away with a typical 10 foot high garage door if you commit to not having a visor on your pilot house roof (or only a low one) and don't back the boat into the shop/garage with anything on the roof (antennae, raft, rods, radar etc).

Hope this helps,


« Last Edit: March 06, 2013, 09:27:14 PM by Brian.Dixon »
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