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  • $39.95 $49.95
    Based on our worldwide best-selling Portland Course Plotter, this LARGE (600 x 218mm) Plotter is made from 2.5mm thick Plexiglass and has 8 recessed magnets so that it can be used on a dry-wipe board for teaching nautical navigation.
  • $19.95 $29.95
    A larger (234 x  318mm) version of our Rib Plotter. Made from 1.5mm thick clear acrylic. Complete with 4 recessed magnets for use on a dry-wipe board for teaching day-skipper nautical navigation.
  • $16.95 $23.95
    The Portland Course Plotter Used worldwide by practical and shore based instructors Bright blue directional arrow prevents accidental reciprocal bearings Edges are graduated for tide and boat speed Base has a fixed grid so it is easy to plot latitude from your GPS system Comprehensive instructio...
  • $27.95 $34.95
    The Portland Course Plotter Kit Used worldwide by practical and shore based instructors Bright blue directional arrow prevents accidental reciprocal bearings Edges are graduated for tide and boat speed Base has a fixed grid so it is easy to plot latitude from your GPS system  Includes a 7" Singl...
  • $36.95 $64.95
    Portland Plotter Movable disc enables magnetic variation to be set on the instrument Movable arm is divided into millimetres Captain Fields' protractor markings Comfortably covers the largest Admiralty Chart Pencil guide holes give precision loction Unique design ensures a truly paralle...
  • $12.95 $14.95
    Portland Navigational Triangle 200mm Features protractor markings and compass points with reciprocals in red Scale in millimetres Manufactured from strong acrylic Can be used in pairs as a Parallel Rule Also available in 230mm