22ft Z4 tonner Bermudan Sloop, Harrison Butler

  New Collars mast fitted April 2018 


Price Details

Asking Price  £4,950

Location: Ashore Mistley, Essex. UK
Make: Harrison Butler class Z4 Tonner Bermudan Sloop
Year: 1938
Condition: very good
Category: Sail
Class: Antique and Classics
Keel Type: Full Keel


A pocket cruising yacht of proven and elegant design, traditional construction,. Zircon is one of about fifty examples of a Z4 tonner class built during the 1930’s and 40’s approx half of which are believed still to exist. She was purchased 2007 by the present owner. Her accommodation provides two berths in a single cabin with a paraffin cooker, portable chemical toilet. Basic freshwater system. No LPG.

Fractional Bermudian sloop rig with single wooden spreaders swept aft slightly, and forward-swept jumper struts. Standing rigging was renewed in 2007. Kept on a swinging mooring throughout  the summer. A new Collars mast fitted in April 2018, she is now back in commission and sailing better than ever.


Nominal Length: 6.71 m
Length Overall: 7.62 m
Length Of Deck: 6.71 m
Length At Water Line: 5.79 m

Beam: 2.13 m
Draft: 1.22 m
Max Draft: 1.22 m


Displacement: 3343lbs
Cruising Speed: 5 knots
Engine Power: 8hp
Number of Engines: 1


Berths: 2
Cabins: 1
Heads: 1
Passenger Capacity: 2


Builder: Lockharts of Brentford.
Designer: Harrrison Butler
Boat Name: Zircon


Hull Material: Wood carvel planked
Hull Design: Displacement
Hull Speed: 5: knots


Engine Model: Yanmar 1GM10, 1990
Fuel Type: diesel
Engine Description: Engine: Yanmar 1GM10 inboard diesel with shaft drive ,
1991, serial no: 10480, 8 hp / 6 kW @ 3400rpm)
Engine Transmission Description: Shaft drive


Carvel-built wooden hull with cast iron ballast keel;
sheathed wooden deck and coach roof with hardwood coamings


Fractional Bermudan sloop (sail no. 25)
Ballast 1016 kg (approx)  New varnished wooden mast made by Collars,  April 2018

Sails: Sail area 24.1 sq metres Wykeham Martin furling jib.
She had been surveyed shortly before her purchase in 2007. Work carried out after that report included work on the engine, the fitting of a new shaft coupling, and general improvement of the electrical system and navigation lights. Maintenance and other work carried out by the owner (sometimes with professional assistance from local shipwright Fabian Bush) included renewal of the deck edges and toe rails, the chain plates and anchoring gear. During the winter of 2015/16 the owner has refastened the below-waterline plank fastenings of forward and aft hood ends, and then over the last summer, stripped back and refurbished the wooden mast.
The yacht’s visual appearance is good, albeit requiring her annual pre season refit 2017.

The main structures of hull, deck and keel in good order; new plank fastenings have been fitted ( forward and aft hood ends). The rudder, rigging attachments, deck fittings and hatches are found to be secure. Original deck has been covered with marine ply, epoxy sheathed and painted with non slip paint.


Two opposing settee berths in a single cabin with berth cushioning.
A Taylors two-burner paraffin-fueled cooker with hotplates and fiddle is rigidly mounted in the galley, with yellow metal fuel tank.
A Porta Potti chemical toilet is mounted beneath the fore peak hatch.

Traditionally-arranged accommodation with furnishings in good visual condition, including: white-painted deck head, deck beams, and hull skin and reinforcing members (where readily visible); varnished coach roof coamings, tongued-and-grooved main bulkhead, galley surfaces and engine cover; and a bare planked hardwood sole.


Simpson Lawrence powered anchor windlass controlled from the cockpit.

A stub VHF antenna is mounted at the masthead, through-hull log and depth sounder transducers.
Silva S15  VHF radio
Autohelm AH800 autopilot
Brookes & Gatehouse Focus combined depthsounder/log
Plastimo Contest bulkhead compass (with large air bubble, still serviceable though this type of compass is not refillable)
Kelvin Hughes barometer + quartz clock
masthead Windex
sounding lead
boat hook
deck brush
various warps and fenders
red ensign + ensign staff
stowable table
folding plastic boarding ladder
boom crutch (oak)
tripping line buoy)
spare fuel cans
various spares, manuals, etc.
winter cover