FOR SALE: Ostac Parallax 11 Catamaran - Proven Cruiser, Ready to Go
Currently berthed at Rebak Marina, Langkawi, Malaysia


Set sail in style with this rare Ostac Parallax 11 - a 36ft performance cruising catamaran. Built strong and light using foam sandwich construction, she's fast, seaworthy, and equipped for long-term cruising or liveaboard life. Renowned for its speed, stability, and seaworthiness, the Parallax 11 combines sleek lines with innovative engineering, delivering an unforgettable sailing experience whether you're racing or cruising.

This beauty features lightweight construction, efficient sail handling systems, and an optimized beam for excellent upwind performance. Its spacious trampolines, clean deck layout, and minimalist cockpit design make it as practical as it is fast.

Well maintained and ready for adventure, this cat is ideal for sailors who appreciate vintage craftsmanship with serious sailing pedigree. Whether you're island-hopping or chasing the horizon, the Ostac Parallax 11 delivers pure multihull joy.

A note from the owner..

"Our Adventure with Paradise

We bought Paradise in 2017, and after six months living in Darwin's marina while we learned to sail, we headed off on our first big voyage, without any crossing experience, we made our way to Kupang, Indonesia. From there, we spent our days chasing waves, exploring islands, diving, and soaking up island life.

We sailed extensively through Indonesia, especially spending a lot of time in the Mentawai Islands West Sumatra surfing and spearfishing up and down the coast of Sumatra. Paradise is perfect for like-minded adventurers--she's spacious, with lots of room on board, full headroom throughout, and a dry cockpit that keeps you protected in wet weather. She's a very liveaboard boat, comfortable and practical for long-term cruising and living aboard.

In 2022 we moved back onto land to start our new journey of raising a young family, and although we've done some trips here and there, we've made the tough decision to pass Paradise on to someone else ready to start their own journey. She's been an incredible vessel for us, and we hope she'll do the same for her next owners. "

Langkawi is duty-free, with low-cost fuel, supplies, and marine services. With its strategic location, calm waters, and friendly clearance procedures, it's the perfect starting point to explore Thailand, Indonesia, and the Indian Ocean.

Rebak Marina - A 5-Star Yacht Haven
Your new catamaran is berthed in the exclusive Rebak Island Marina, offering:

24/7 security and full-service boatyard

Resort access: pool, gym, restaurants, laundry

Cruiser community and ferry links to Langkawi

Please feel free to contact Seaspray Yacht Sales, Langkawi, for more information, or to book a viewing appointment.
Seaspray Yacht Sales is a division of Seaspray Marine Services. Qualified Shipwright Services established and operated in Langkawi for 14 years.

Vessel name: PARADISE

Condition: GOOD

Vessel type: Catamaran

Designer: Robert Chamberlain

Builder: Ostac Catamarans

Make: Ostac

Model: Parallax 11

Constructed: 1991

Registration: ON 855122

Length over all: 36 ft

Beam: 6.15m

Hull material: Glass Fibre

Hull type: Catamaran

Fuel capacity: 540 Litres

Water capacity: 500 Litres

Accommodation

Accommodation: Full headroom throughout on the bridgedeck is a large
folding table that seats 6 adults comfortably, Heaps of
storage under seating and behind and cupboards in each
cabin is more storage. Excellent all round views from the
saloon table.
Cabins: 3 double
Berths: 3 double beds
Shower: Yes
Toilet: Electric macerator Toilet on bridge deck with saniloo system (Currently plumbed to go straight over board)
Air-Con: 240v Panasonic Low Watt Split system A/C
Galley: Large galley down in Starboard hull lots of natural light with
large window views and heaps of bench space
Refrigeration: Upright fridge on bench 90l
Freezer: Chest Fridge/ Freezer inbuilt into bench
Stove: 4 Burner Gas stove/ oven 2 x 9kg gas bottles in explosive proof locker
Water-Maker: Water maker was removed due to leaking fittings 3 years ago. I would say new hoses and membranes and re installation. The 12 v hp pump is still OK though. Brand is h20 on the go.
Hot Water: 25L stainless heat exchanger/240v hot water system

This Australian designed catamaran was constructed using ground breaking methods for the time. Vacuum Bagged with triaxial and biaxial glass laminates over high density foam core with vinalester Resin Meaning that there is Zero osmosis in this boat.

Equipment

Ground Tackle:
Maxwell RC8 anchor winch New 2023
80m 8mm chain Good condition 2023 with
Plow anchor attached
Spare Large Danforth anchor with 100M Rope attached

Chains & ropes: Many spares
winches: 7 self tailing winches

Davits: yes

Navigation Equipment:

Raymarine Axiom 9 Multifunction Display
VHF Y Cobra VHF
HF N
AIS Y GME AIS and AIS splitter
Radar Y Raymarine Quantum 4g
Depth/Speed/Wind
Instruments
Y Raymarine Depth, Speed, wind
Wind Vane
Auto Pilot Y Raymarine EV100 Autopilot can be controlled through axiom
or through P70 Control head, hydrive hydraulic rams control
the rudders

Engine(s):

Engine: 3GM30FC, 27HP Fresh Water Cooled
Engine Make: Yanmar
Number Engines: 2
Horsepower: 27
Fuel Type: Diesel
Engine Hours: 1200 since rebuild
Engine Hours (2nd Engine): 900 Since Rebuild (2021)
Fuel Consumption: 3L/hr
Max Speed: 9 knots
Cruise Speed: 6.5
Propulsion: S20 Sail Drives with fixed blade props
Thrusters: No
Genset: 1KVA Honda portable
Fuel: 200L inbuilt Stainless Tank plus 340l in Jerry cans.
Water: 2 x 250L water tanks
Dinghy: 3m Finn spindrift Polly tender
Outboard: 2.5 HP 4 stroke Suzuki


Covers: Full Clears surrounding cockpit area making it dry and
comfortable in extreme weather
New Boom Bag 2024
Shade sail that covers front half of boat
Bridgedeck window shade covers

Sail Inventory:
Unknown age of sails but recently had them looked over and
any damage was repaired by Rolly tasker
Full batten Main 42.4Sqm
Working Jib 25.5Sqm
Storm jib 8.1sqm
Reacher 70sqm

Mast / Rigging:
Aluminium mast 13.7m
Rigging replaced 2017

Electrics

12v DC
240v AC

House batteries:
330AH Power Paul, Lifep04 Battery with 250 Amp BMS
New Dec 2022

Engine Start
Battery : Type/Age
70ah
New Dec 2022
Solar Panels/Watts/Age 3x 150W
3x 40w
2x 110w Flexible (not working due to failed Panel)
Generator 1Kva Honda Portable
Wind Generator Not working has been disconnected
Charger Victron Multiplus 2,3kva Inverter/Charger
Victron DC/DC 30a
Victron Mppt 100 30
2 x Victron Mppt 75 15

Safety Equipment

Parachute anchor with 80m Rope attached
Drogue with 80m Rope attached
Bilge Pumps: 4
Life Raft: No
Epirb: Yes
Life Jackets: 2x self inflating 1 with personal epirb attached 8x standard
Flares: Many but expired
Fire Protection: 3 x fire extinguishers and fire blanket


Extra Remarks:

Original owner had the boat custom made in 1991, it was
featured in the Sydney boat show in 1992 for Ostac
catamarans. Original owner cruised the East Coast of
Australia through to the Kimberleys in Western Australia and
up to PNG living aboard for 10 years until we bought it. We
bought the boat in 2017 in Darwin and lived aboard sailing
mainly through Indonesia and Southeast Asia chasing the
surf, living aboard full time until 2023.

Last Survey was in 2017 when we bought the boat

We are the second owners, Boat has been in asia for the last
7 years, antifoul was last done in Thailand in December
2022

Please contact Rachel Robertson at +60174814869