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Manufacturer Info



  Lagoon Catamarans is a brand of Groupe Beneteau of France and builds multihulls from 39 to 62 feet. Many of these models are active in bareboat and high-end crewed charter and have been gaining ground in the private ownership market as well. Since the mid-1980s, Lagoon has built boats focused on practicality of use and onboard comfort. The boats are easy to spot by their vertical wrap-around windows, rounded cabintops and square-head mainsails. Visibility from the helms of these models is excellent as the steering stations are always raised but somewhat protected from the elements. These boats enjoy the support of a strong owners’ association and can be found cruising in most parts of the world.    

2014 Lagoon 421


Lagoon 421
Lagoon 421 Sailing
Lagoon 421 Stern
Lagoon 421 Cockpit
Lagoon 421 Cockpit
Lagoon 421 Saloon
Lagoon 421 Galley
Lagoon 421 Cabin
Lagoon 421 Cabin
Lagoon 421 Bathroom
Lagoon 421 Bathroom
Lagoon 421 3 Cabin Layout Plan
Lagoon 421 4 Cabin Layout Plan
  • Boat Summary
  • Full Details

Boat Description

The Lagoon 421 is designed to meet the needs of sailors whose first concern is comfort and space, without sacrificing the pleasures of pure sailing.

Boat Details
Beam 24 ft 7 inMax Draft 4 ft 2 in
Dry Weight 26835 lbHull Material Fiberglass
Hull Shape CatamaranFuel Capacity 79 gal
Length Overall 41 ft 4 inWater Capacity 46 gal
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Detailed Specs
Max Bridge Clearance 64 ft 9 in   


  • Polyester and high quality anti-osmotic resin FRP construction
  • Infused balsa core composite hulls - white gel coat
  • Infused solid glass FRP under waterline
  • Bridge deck and deck in balsa sandwich. Vacuum bagged and infused with high quality anti osmotic resin and polyester resin
  • Solid or felt core composite interior FRP hull & roof liners
  • FRP reinforced marine ply bulkheads; glassed or bonded to hull

Deck and Hull

  • 8 Mooring cleats
  • 1 vertical electric windlass 1000 W with 10 mm gipsy
  • Bow safety nets on each side of the composite central rostrum
  • S/s stern pulpits with horseshoe buoy mount and flag holder
  • S/s bow pulpits and forward lifelines
  • S/s double lifelines
  • S/s coachouse handrails
  • Lifeline gates


  • Cockpit useable as outdoor salon, accessible via a stern walkway connecting both transoms
  • Hard top bimini with integral lighting
  • Self bailing cockpit with teak grate
  • Helm station on starboard roof bulkhead including: motor throttle controls, motor control panels, steering compass, area for electronic instruments installation, leather covered steering wheel with brake, double helm seat with cushions, access steps from cockpit with s/s handrail, 2 line storage compartments
  • Steering system: cable steering, composite shaft rudders, emergency tiller
  • U-shape seating area with technical/generator (option) compartment
  • Varnished wooden cockpit table interchangeable with salon coffee table
  • 1 aft cockpit seat locker
  • 1 port cockpit propane locker
  • 2 large storages area under steering station
  • 2 cockpit storage shelves



  • Large panoramic view salon with sliding door and lock
  • Standing headroom: 2.05m/6’9”
  • 12V salon overhead lights
  • Seating for 8 people
  • Varnished wood coffee table that can be swapped with large wooden cockpit table. 1 set of tall aluminium legs and 1 set of short aluminium legs
  • Storage under settee
  • 2 opening hatches in forward vertical coachouse windows

Forward Starboard cabin

  • Access through starboard passageway door
  • Standing headroom: 1.95m/6’5”
  • 12V overhead lighting
  • 2 X 12V headboard reading lights
  • “Semi – island” type berths with front and side access 2.0 m X 1.5 m/6’7” x 5’
  • 1 drawer and 2 storage lockers on front of bed
  • Lockers on both sides of bed
  • 1 Hanging locker
  • 1 Opening deck hatch with curtain
  • 1 Hull port with curtain
  • 1 Large one-way fixed window with curtain

Forward starboard head

  • Access from cabin door
  • 12 V lighting
  • Standing headroom: 1.95m/6’5”
  • Large manual marine head with holding tank with gravity drain/ deck pump out (same holding tank for front and aft WC)
  • Fibreglass washbasin with hot/cold mixer tap, cupboards, mirrors
  • 1 Opening deck hatch with blind

Aft Starboard Cabin

  • Access through starboard passageway door
  • Standing headroom: 1.85m/6’1”
  • 12V overhead lighting
  • 2 headboard reading lightsWC
  • “Semi – island” type berth with front and side access 2.0m X 1.5 m/6’7” X 5 ft
  • 1 Drawer and 2 lockers on front of bed
  • Lockers on both sides of bert
  • 1 Hanging locker
  • Access to emergency escape hatch
  • 1 opening deck hatch with blind
  • 1 hull port with curtain
  • 1 large one-way fixed window with curtain

Aft starboard head

  • Access from aft starboard cabin door
  • 12 V overhead lighting
  • Standing headroom: ± 1.95 m/ 6’5”
  • Large manual marine head with holding tank with gravity drain/ deck pump out (same holding tank for front and aft WC)
  • Fibreglass washbasin with hot/cold mixer tap, lockers, mirrors
  • 1 opening deck hatch with blind


  • Standing headroom: 2 m/6’7”
  • 12V overhead lights
  • Dark grey laminate countertop with wooden fiddles
  • 3 burner stove
  • Separate oven with grill
  • 2 drawers
  • Cupboard under sink with waste bin behind door
  • Storage under central seating area
  • Overhead cupboards
  • Additional storage areas designed for (optional) additional fridge or freezer, a dishwasher and microwave oven
  • 1 x12V fridge 130 L/34 US gal


  • Access from opening hatch in transom
  • 2 x 40 hp sail drive diesel
  • Motor shut off at helm station
  • Double motor throttle control at helm station
  • Motor compartments sound insulation
  • Motor compartments air intakes on aft crossbeam
  • 12V Air exhaust fans
  • 1 engine start battery 12V – 110 Ah (per engine)


  • Backlit 12 V Electrical panel
  • LCD display with: voltmeter, Ah-meter, water level gauge, diesel level gauge, low level alarm for diesel and water tanks
  • 2 Start batteries: 12V - 110 Ah
  • 2 House batteries: 12V - 140 Ah
  • LED lights


  • 1 Full batten full roach mainsail, 66,4 m²/ 714 sq ft
  • 1 Furling genoa with UV protective band, 35,9 m²/ 386 sq ft


Standing Rigging

  • Anodized aluminum deck-stepped mast (18 m /59'1'')
  • Single spreaders
  • 1 Anodized aluminum boom
  • 2 Shroud deck chainplates
  • 1 Forestay chainplate on composite central rostrum

Running Rigging

  • 1 Double purchase main halyard
  • 1 Genoa halyard
  • 1 Double purchase mainsheet led back to helm station, mainsheet traveler and car on hard top bimini
  • 2 Genoa sheets
  • 2 Genoa sheet tracks
  • 3 Winches at helm station:
  • 1 Winch 46.2ST for:
  • Port mainsheet traveller line
  • Starboard mainsheet traveller line
  • Port genoa sheet
  • 1 Electric Winch 44.2STE for
  • Main halyard
  • Genoa halyard
  • Optional spinnaker halyard
  • Boom topping lift
  • 1 Winch 46.2ST for
  • Main sheet
  • Reef 1 (automatic)
  • Reef 2 (automatic)
  • Reef 3 (conventional)
  • Starboard genoa sheet
  • Genoa furling line
  • 3 reefing lines (2 auto and 1 conventional)
  • Line jammers
  • 1 Fixed mainsail clew padeye
  • 1 Genoa furler line
  • 2 Adjustable lazy jacks
  • 2 Winch handles with holder