Southerly Yachts: Without Limits - Southerly 420


The Southerly 420 has all the elements you would expect of an ocean-going yacht: the tried and tested variable draft swing keel, twin helm rudder arrangement, and a smartly designed deck layout with a comfortable cockpit and cockpit arch for the main traveler.

The versatile rig features twin headsails, an in-mast ICW-friendly (60’ 7”) furling mainsail and an integrated bow sprit. The opportunities are endless! From shallow anchorages that others can’t access to drying out on the beach or a canal passage to the Mediterranean.

A key benefit of the Southerly variable draft swing keel is the shallow draft opportunities and the enhanced performance from a deep, high aspect ratio keel when fully lowered. The yacht draws 2’ 9” with the keel up and 8’ 11” with the keel down.

In practice, the yacht is stiffer due to the improved righting moment, carrying her sail area better than others, and carving her way efficiently to windward in a seaway.

The Southerly 420 is comfortable under sail or at anchor. Enjoy attractive interior styling, a raised salon with unparalleled views, a linear galley, a dedicated nav station, two comfortable private cabins, and two heads. The Southerly 420 is a well-rounded yacht that allows one to explore where others can’t.


  • Built to order by expert craftspeople in England.
  • Ballast plate and variable draft swing keel (2’ 9” up & 8’ 11” down)
  • Excellent windward performance to 30 percent
  • ICW friendly air draft (60’ 7”)
  • Solant rig (twin headsails) with in-mast furling mainsail
  • A cockpit mainsail traveler arch
  • Twin rudders and a skeg-protected propeller
  • Two or three cabin layouts with two heads
  • Raised salon with a U-shaped settee that converts to a double berth
  • Comfortable aft cabin with a center-line berth




Length Overall 42' 7" ft
Length Waterline 36' 5" ft
Beam 13' 3" ft
Draft – Keel Up 2' 9" ft
Draft – Keel Down 8' 11" ft
Displacement 25,003 lbs
Ballast Weight 4,630 lbs
Keel Weight 3,461 lbs
Total Ballast 8,091 lbs
Air Draft 60' 7" ft
Sail Area - Main Sail 477 sq ft
Sail Area - Jib 334 sq ft
Sail Area - Optional Code 645 sq ft
Engine Yanmar 57hp
Fuel Capacity 82 gal
Water Capacity 86 gal min



Layout and Technical