Used Boats For Sale in Sidney - Nautitech

Newly new vessel, large solar, lithium batteries, watermaker and parasailor !

Howdoo was purchased and outfitted for an extended family offshore and off‑grid adventure. Plans have changed, so she is now fully prepared and available for your blue‑water journey.

The Nautitech 40 Open is designed for owners who value true sailing performance without sacrificing comfort or safety. Dual helm stations provide excellent visibility and control for both sailing and docking, while the low boom and efficient keels deliver impressive upwind capability. The signature “Open” concept creates a seamless, single‑level living space from helm to cockpit to saloon/galley — safe, social, and ideal for passagemaking and life at anchor.

Howdoo is the desirable Explorer version with the sought‑after owner’s layout, featuring the most recent Millesime interior styling inspired by the award‑winning Nautitech 44. Beyond her well‑selected factory options, she has been upgraded with a professionally designed custom energy system including top‑tier solar, lithium batteries, and inverter/charger components.

Her blue‑water sail suite is equally impressive, featuring a gennaker and Parasailor — a turnkey setup for the ARC Rally and long‑range cruising.

We welcome your inquiries. As experienced Nautitech dealers with extensive international sales and cruising support experience, we are well‑equipped to help you take the next step toward your adventure.

Name................................................... Howdoo

Year........................................................... 2024

Designer.................................... Marc Lombard

LOA............................................ 39’ 3” (12.0m)

LWL............................................... 39’ 2 (11.9m

Beam............................................. 22’7” (6.9m)

Draft............................................... 4’4” (1.32m)

Displacement................................... 18,739 lbs

Ballast.................................................... None !

Sail Area ............................................... 936 ft2

Hull                                                    Fiberglass

Deck................................................. Fiberglass

Steering............................................ Wheel x 2

Keel.............................................................. Fin

Rudder.................................................... Spade

Fuel........................................ 106 gals (400 L)

Water....................................... 158 gals (600L)

Hot Water................................................... Yes

Holding Tank........................................ Yes x 2

CONSTRUCTION

• Vacuum infused technology to guarantee the best strength/weight ratio
• Divinycell PVC closed cell core – no balsa to rot !
• Structural bulkheads laminated to the hull.
• Watertight bulkheads fore and aft in each hull

COCKPIT

• Open plan – with the helms to the quarters (ideal for sailing) there is a larger cockpit than would be expected on a 40’ catamaran.  Perfect view of the sea and sails.
• Open plan – seamless integration with the saloon through the massive cockpit multisegmented door.
• All on one level from helm to galley or saloon.  Clear and safe communication for the whole crew and/or family.
• High quality upholstery throughout – water and UV resistant. Full set of cockpit cushions
• Carbonautica helms !
• Full lighting in the cockpit
• Full cockpit enclosure with doors
• Cockpit shower with hot and cold.

INTERIOR

• From the saloon and galley – 360 degree panoramic view with forward facing chart table.
• Saloon table lowers to form another bed – or a great place to “stand” watch at night !
• Owner’s version – one whole hull dedicated to the owner with a queen bed aft, owner’s desk in the center and a massive shower and toilet are forward.  Separated walk in shower compartment
• The starboard hull has the same large bed aft and other guest cabin forward.  All have great lighting and ventilation.  The guest hull has its own bright and functional bathroom with shower.
• An extra cabin in the starboard forepeak with mattress and upgraded gelcoat finish, ventilation, light and access from the starboard forward cabin.
• Outstanding natural lighting throughout
• High level of interior fit and finish.  In excellent condition.
• Washing machine – 3 kg 
• Blinds on all cabin hull windows
• Upgraded mattresses throughout
• Blackout shades and mosquito nets for all hatches
• Fans throughout the vessel
• Full external sunshades for the saloon with openings for the hatches.  All hatches are flush.
• Upgraded interior lighting including strategic indirect lighting and courtesy lighting

GALLEY

• Great seaworthy galley – large for a 40’ catamaran !
• Seamless connection to the cockpit.
• Lots of surface and storage space.
• ENO LPG 3 burner stove and gourmet oven
• Lots of refrigeration – fridges in the galley (130l) and cockpit (65l) plus the optional 55L freezer

MECHANICAL

• Volvo 30hp engine x 2 – Hours approx. 750hrs
• Folding propellers for fast sailing
• Excellent engine access

ELECTRICAL + PLUMBING

• Professional aftermarket installation of the off-grid ready solar and lithium house bank !
• Large solar panel array – 12 panels for a total of 1452  watts.  Tough+ Black flush panels with 6 x MoonRay 320 MPPT controllers.  Maximum efficiency !
• 8 x Smart Lithium batteries – for 864 amp-hrs
• Victron Quatrro inverter/charger 12/3000 – 3000W
• 2 x Mastervolt Mac Plus 12/12-50 DC to DC chargers
• USB plugs throughout
• LED spreader lights
• Watermaker – 12V Schenker ZEN 50 high efficiency watermaker – 60 lt/hr capacity
• “Quiet Flush” Electric toilets x 2 – freshwater flush for no smells !

INSTRUMENTS

• Full B&G electronics package !
• Each helm has B&G Zeus 9” plus a B&G Triton multifunction display
• A separate B&G Chartplotter at the forward-facing chart table
• B&G Autopilot controllable from either helm or the chart table
• B&G 4G Broadband digital radar
• B&G AIS Receive and Transmit
• B&G VHF radio with DSC and a wireless remote
• Fusion Marine Stereo

SAILS & CANVAS

• Mainsail with custom stackpack and lazy jacks
• Self-tacking jib with furler.
• Gennaker reacher on continuous line furler
• Parasailor – New Gen version with ‘Bluewater’ upgrade and the “Easy Snuffer” and cruising bag.  Perhaps the perfect stree-free way to go downwind !

RIGGING + DECK GEAR

• Upgraded electric winch for the main halyard
• Lewmar Anchor windless with remote and chain counter
• Delta anchor (20kg) with 60m of chain

ADDITIONAL EQUIPMENT

• Tender: Highfield Hypalon 3.1m RHIB (2024)
• Outboard: Suzuki DF15AS (2024)
• Liferafts:  6 pax AND 4 pax with grab bag (2024)
• Tiki Inflatable Gangway/Passerelle
• Full safety equipment including OceanSignal EPIRB3 and 2 x OceanSignal MOB1
• Portable VHF
• 8 x 165N automatic lifevests with tethers (4 un-used !)
• Topomarine rescue binoculars with compass

MAINTENANCE

• Coppercoat antifouling – estimated 10 year life
• Last haul-out: Dec 2025

Listed by Max Shaw at the Port Sidney office of Yacht Sales West

Designed by Marc Lombard and celebrated for its balance of speed, comfort, and seaworthiness, the Nautitech 44 Open has become a favourite among sailors who want to go far and enjoy the journey. Mackensea takes that foundation and elevates it.

Single owner - Never Chartered - As New Condition

This Owner’s Version blends the signature inside/outside Open concept with a beautifully executed light‑wood interior and the rare SmartRoom utility space. Every upgrade was chosen with long‑range independence in mind: a powerful lithium bank, nearly two kilowatts of solar, a high‑output watermaker, upgraded 50 hp engines, and a full suite of sails for every point of wind.

Life aboard is effortless. The cockpit and saloon merge into a single social space. The owner’s suite is bright, quiet, and beautifully finished. Refrigeration is abundant, connectivity is global, and the systems are modern, efficient, and easy to manage.

Mackensea isn’t just equipped for bluewater cruising.  She’s designed for it.

Located conveniently in Lagos, Portugal.

Yacht Sales West is well poised to assist you start your sailing adventure with extensive offshore experience and as authorized Nautitech dealers

Name.............................................. Mackensea

Year........................................................... 2024

Builder.......................... Nautitech Catamarans

Designer.................................... Marc Lombard

LOA........................................................... 43’8”

Beam......................................................... 24’2”

Draft............................................................ 4’9”

Displacement................................... 24,045 lbs

Ballast.................................................... None !

Sail Area ............................................ 1,142 ft2

Hull                                                    Fiberglass

Deck...................................... Cored Fiberglass

Steering........................................ Dual Wheels

Keel.............................................................. Fin

Rudder.................................................... Spade

Fuel..................................................... 132 gals

Water................................................... 158 gals

Hot Water................................................... Yes

CONSTRUCTION

• Light and rigid construction with vacuum infusion technology.  Vinylester resin construction
• Bulkheads are bonded in and also use sandwich infusion for robustness and lightness.
• All coring is divinycell - no balsa, unlike some other popular brands !
• Single‑shot infused hull with structural bulkheads laminated in‑mold.
• Inverted bows and stepped chines for performance and comfort
• High aspect fin keels and low boom provide great upwind performance.
• Watertight bulkheads fore and aft.

COCKPIT

• The expansive cockpit is often the main living area on these catamarans.  With the helms on the quarters for great sailing and visibility, there is a large living area in the cockpit with settees and a large table.  A perfect entertaining area.
• From the helms to the galley and saloon everything is on one level and in sight – great for safety and comfort.
• The helm positions provide great visibility of the water and the sails with a tight linkage with the rudders.  The preferred solutions for sailors. Each helm is protected by its own bimini. Synthetic teak in the cockpit and the aft platforms
• Upgraded teak cockpit table
• Optional Foredeck lounge – bar and storage box with integrated cushions. Pop-up “secret” light
• Full set of cockpit cushions
• Full cockpit enclosure
• Hot and cold cockpit shower

INTERIOR

• Owner’s Version to port with guest cabin and Utility “Smartroom” to Starboard.
• Large cockpit doors create an open area between the saloon and the cockpit.  The spacious cockpit and luxurious saloon become one expansive living space.
• The Nautitech center “bar” is a feature of the saloon that not only provides even more storage and preparation space but a convenient bracing point for offshore sailing
• To port is another settee and lowerable coffee table.   Saloon table converts to another berth – great for night watches as well. 32” TV integrated into the saloon bar.
• The forward-facing chart table has great visibility and comfortable place to stand night watches
• To starboard is the large seaworthy galley.  With the large opening doors there is an easy flow to and from the galley and the cockpit
• Luxurious master suite on the port side: Queen sized bed aft with a custom desk midships and the large bathroom forward.  Large walk-in shower all the way forward and separate toilet area with sink forward of midships.
• Utility “Smartroom” – with large 7kg washer/dryer and 108l freezer and extensive storage and bench space.  Access to the starboard forepeak through the water tight bulkhead.
• Aft and starboard is the guest cabin with the same large bed as in the master suite.  Extensive storage.
• Desirable “light wood” option
• External sunshades for the saloon with opening for the hatches.
• Blinds for all windows in the hulls
• Upgraded mattresses and custom bedding in each cabin
• USB charging and fans throughout

GALLEY

• Great seaworthy galley with lots of ventilation, storage and counter space.  Easy access to the cockpit.
• Extensive refrigeration – 2 x fridge (144l) and freezer (70l) in galley, plus a large freezer (108l)  in the Smartroom and convenient fridge in the cockpit.
• Large LPG three-burner stove and oven.
• Microwave

MECHANICAL

• 2x Volvo Penta D2-50F 50hp engine – upgraded power !
• 632/622  hrs
• Easy access to the engines
• Folding propellers – fast under sail !
• Onan 7kW generator

ELECTRICAL + PLUMBING

• Fully equipped for off-grid living
• Custom upgraded Lithium house bank - 1020 amp-hrs
• Large 1840 W solar on hardtop and davits.  Solar on hardtop new 2026. MPPT charge controllers.
• Upgraded Victron Inverter/Charger 3000W/120 amp 
• Upgraded lighting throughout including courtesy lights and LED spreader lights
• Aquabase 105l/hr 12v watermaker
• Electric toilets with freshwater flush x 2

INSTRUMENTS

• Full B&G electronics suite
• 9” B&G chartplotter at each helm plus a 12” chartplotter at the forward facing chart table
• B&G Triton multifunction display at each helm
• B&G Autopilot control at each helm
• B&G Halo 20+ digital radar
• B&G VHF with integrated AIS transmitter/receiver and B&G wireless VHF remote
• B&G Forwardscan forward looking sonar
• B&G mast mounted forward looking camera integrated into the chartplotters
• Primary Satcom: Starlink Maritime
• Backup Satcom: Iridium Go!
• Fusion stereo system with zone control

SAILS & CANVAS

• A comprehensive sail suite optimized for blue‑water sailing
• Fully battened mainsail with stackpack and lazy jacks
• Self-tacking jib
• Gennaker on a continuous line furler
• Code zero on continuous line furler
• Oxley Levante Parasailor with custom rigging for stress free tradewind sailing

RIGGING + DECK GEAR

• Bowsprit – removable for moorage.
• Upgraded running rigging in Dynema or Technora
• Upgraded winches including two electric winches – easy !
• Davits for the tender

ADDITIONAL EQUIPMENT

• Windlass: Electric Lewmar
• Anchor: Upgraded 30kg Spade anchor with Wasi Powerball swivel
• Rode: 70m of 10mm chain
• Tender: Highfield 320 with bespoke tube covers.
• Outboard: Honda 15hp
• Extensive spares
• Liferaft: 8 pax ISO 9650-1 certified with grab bag
• Full ARC compliant safety equipment.
• All of the cruising equipment stays with the boat including SUP and full set of fishing gear.

MAINTENANCE

• Last haul-out and anti-fouling: July 2025
• Last engine oil change: July 2025
• Detailed maintenance logs and manuals

Listed by Max Shaw.