Duchy 21

With ample cockpit space for eight guests, this stylish open day boat provides the perfect platform for picnics on the water, day cruising and relaxing with family and friends.


Designer: Cockwells


Dive into the blue from a ladder that aligns with the cockpit’s central steps. Dry off in style by reclining on the comfortable waterproof cushions of the forward double sunbed. Create a spacious overnight double berth or a fully-enclosed cockpit when skies turn grey with ingenious sprayhoods that disappear when not in use. Sip something chilled from the fridge whilst listening to your favourite tunes. Prepare a gourmet supper at the hob and dine al fresco at hand-crafted oak tables – or transport it ashore in your bespoke picnic hamper.


Powered by either diesel engine or electric motor, this highly versatile, capable sea-going boat can be towed and launched almost anywhere – at the coast, or on the river, fjord or lake.


The possibilities of life aboard a Duchy 21, customised to include any number of optional extras, are countless. How would you customise yours?

  • Cockwells - Duchy 21 - Detail
  • Cockwells - Duchy 21 - Detail

Whenever we go out in our Duchy 21, which is at least twice a week, someone will comment what a good-looking boat she is, almost without fail. One person even offered to buy her if we ever wanted to sell. We are delighted with our Cockwells’ boat. She brings us a great deal of pleasure. ”

  • Profile
    • Deck Plan
    • Profile
    • Duchy21-Elevation-175×72
    • Duchy21-Elevation-175×72
      • Length overall 6.4m
      • Length waterline 5.7m
      • Beam 2.3m
      • Draft 0.5m
      • Air draft 0.97m
      • Displacement 0.97t
      • Fuel capacity 69l
      • Engine 14hp Nanni N2
      • Maximum speed 6-7 knots
      Standard Features
      • Low maintenance GRP hull and deck
      • Full set of waterproof marine cushions
      • Electric systems including engine console, navigation lights and fuel gauge
      • 1 manual and 1 electric bilge pump
      • Fender strip
      • Emergency boarding ladder
      • Stainless steel flagpole
      • All stainless steel fittings including cleats, bollard, fender eyes and fairleads
      Optional Extras
      • Electric motor
      • Underwater epoxy coating
      • Water tank/plumbing
      • Thetford Porta Potti 335
      • Removable handrail
      • Cockpit sunbed
      • Folding oak table
      • Engine box back rest with stainless steel handrail
      • Forward and aft folding sprayhoods including adjoining piece
      • Cockpit cover (tonneau)
      • Ambassador rope cutter
      • Ropes and fenders
      • Ensign
      • Aluminium beaching legs
      • Stainless steel fishing rod holders
      • Custom hamper, crockery and china
      • 240V AC system with battery charger
      • Courtesy lighting
      • Hob and sink
      • 29L Refrigerator
      • Fusion Marine Stereo and two speakers
      • Dual USB charging socket
      • Removable swim ladder
      • Whale Twist deck shower

      Contact us to find out more

      Dave Cockwell

      Founder & Managing Director


      Respected globally in the boatbuilding industry, with an extensive portfolio of multi-million-pound projects behind him. Renowned for his problem-solving and innovative boatbuilding expertise whilst also keeping a firm eye on his traditional heritage.

      May we introduce our
      Duchy 25