Mumby 48

A true offshore performance cruiser - proven, practical, and ready to sail the world.

Built by renowned Australian sailor and boatbuilder Serge Testa - still holder of the record for the smallest vessel to circumnavigate the globe - Luar was his final and most refined creation before retirement. A modified Mumby 48 design, she reflects over four decades of Testa's hands-on experience and seafaring insight. Constructed in Brisbane from aluminium, Luar is strong, lightweight, and designed with long-range, low-maintenance cruising in mind.

Purchased as a near-new vessel in 2020 by current owners Braye and Emma, Luar has since proven herself extensively - sailing from Brisbane to Tasmania, the Australian East Coast, remote Indonesian islands, and recently to Langkawi. Her systems have been thoughtfully upgraded for liveaboard life and independent offshore passagemaking.

Key Features & Upgrades

Aluminium Construction - Built for strength, longevity and serious bluewater capability

Modified Mumby Layout - Centralised helm station (not aft), galley-up, open saloon, clean aft cockpit for pure social space - vastly superior to traditional layouts

Twin 39hp Engines - Only ~60 hours at purchase; minimal use since

Raymarine ACU-400 Hydraulic Autopilot - Replacing the standard mechanical system; far more robust and programmable

Dual Profurl Furlers - Headsail and staysail for easy sail handling in boisterous conditions

Schenker Zen 60 Watermaker - Ultra-efficient mechanical system with minimal power draw - easily run from solar

Eberspacher Diesel Hydronic Heater - Three fan radiators (saloon and both hulls) for high-latitude cruising comfort

Highfield 4.2m RIB & 25hp Outboard - Alloy beach wheels, chaps, and big power for true exploration

Custom FRP Stern Grating & New Aft Sun Awning

Cockpit Upholstery & Additional Comfort Features

Voyaging Pedigree..

Since launch, Luar has logged thousands of bluewater miles, from the Tasman Sea to the Timor Sea and deep into the Eastern and Southern Indonesian archipelagos. She's not a marina-bound showpiece - she's a proven global cruiser, meticulously maintained and continuously improved. In August 2025, she made a direct passage from Lombok to Langkawi via the Java south coast - testament to her performance, comfort and reliability.

Why We're Selling..

As a professional mariner, Braye is now leading the design and build of a 35m aluminium performance sailing catamaran - essentially, Luar scaled up for global expeditions. With construction beginning in 2026, managing two vessels is simply not practical.

Final Thoughts..

If you're looking for a serious, ready-to-go, aluminium cruising catamaran that blends offshore pedigree with practical comfort and intelligent design, Luar is a rare find. She's not just a boat - she's a culmination of decades of experience and adventure, ready to continue her journey with new custodians.

Location: Rebak Island Marina & Resort, Langkawi
Registration: Australian Registered
Designer: Tim Mumby & Serge Testa
Builder: Serge Testa
Use: Family, Leisure, Liveaboard

Vessel Overview

LUAR is a purpose-built 2020 custom aluminium cruising catamaran by renowned designer-builder Serge Testa and Tim Mumby. Designed for long-term liveaboard and remote cruising, she features safe, lightweight aluminium construction, generous internal volumes, and excellent ventilation throughout. With four queen cabins, ample refrigeration, solar power, air conditioning, and a proven offshore layout, LUAR is an ideal platform for liveaboard cruisers seeking independence and durability.

Specifications

• Length: 49’ 3” / 15.00m

• Beam: 7.5m

• Draft: 1.0m

• Displacement: Approx. 7 tonnes

• Keel Type: Mini keels with fixed rudders and saildrives

• Hull & Deck Material: Aluminium

• Cabins: 4 Queen cabins

• Berths: 4 Queens

• Heads: 2 (with grey/black water tanks & macerator pumps)

• Showers: 2 internal + 1 deck shower

• Air Conditioning: Dometic Envirocool ECD 16 BTU (heat pump)

Engines

• Make/Model: 2 x Yanmar 3JH5E – 39hp each

• Hours: 1150+ each

• Drive: Yanmar SD60 Saildrives

• Propulsion: Gori 2-blade folding props

• Max Speed: 9.5 knots @ 2750rpm

• Cruise Speed: 6.7 knots @ 2200rpm

• Fuel: 600L total (300L per side) + jerry cans (diesel, water, petrol)

Tankage

• Water: 100L SS drinking tank + 700L alloy integral tank (no saltwater plumbing)

• Hot Water: 22L (240V or engine-heated)

• Fuel: 600L total

• Watermaker: Schenker Zen 60 (2 years old) with spare pumps, filters, controllers

Dinghy & Outboard

• Dinghy: 3.8m Highfield Alloy RIB with chaps and beach wheels (2.5 years old)

• Outboard: Yamaha 25hp 4-stroke short shaft (same age)

• Spares: Prop, spark plugs, impellers

Sail Inventory

• Main: Radial Hydranet HNR 482, full battened, 3 reefs (2018, lightly used until 2020)

• Genoa: Radial Hydranet HNR 483 with UV strip on Profurl furler

• Staysail: 10oz Dacron with UV strip on Profurl furler

• Mast/Rig: Allyacht Spars (Brisbane) 2018/19

• Halyards: Spectra

• Prodder fitted – ready for Code Zero (not included)

• Winches:

  • 2 x Anderson ST 58 (headsails)

  • 2 x Anderson ST 46 (mainsheets)

  • 2 x Anderson ST 40 (mast)

• Boom Bag: Needs replacement

• UV Covers: Matching for both headsails

Accommodation

• Cabins: 4 queen cabins

  • Port fwd: Laundry with full-size top-loading washing machine

  • Stbd fwd: Office/desk area

• Ventilation: Excellent cross-ventilation via internal and external portholes/hatches

• Saloon Table: Leaf insert to expand dining table

• Cockpit: Aft cockpit fully covered with solid roof for sun/rain protection

• Cabin Design: Clean walkthrough from bow to aft cockpit; no helm obstruction

Galley

• Location: Galley-up in saloon

• Refrigeration: 2-drawer Dometic fridge units

• Freezer: Top-loading (adjustable to fridge if preferred)

• Cool Storage: Under freezer

• Stove: Eno 3-burner marine gas cooktop + Thetford oven

• Gas: 2 x 9kg cylinders

Covers

• Hatch covers

• Full cabin cover (allows visibility and motoring under cover)

• Boom bag (needs replacing)

• UV strips on headsails

Navigation & Electronics

• Plotter: Raymarine Axiom 7"

• Radar: Raymarine Quantum

• Autopilot: ACU 400 Hydraulic (plotter and separate controller)

• Wind Instrument: Raymarine i60

• Sounder: Garmin Echomap

• VHF: Icom fixed and handheld units

• Antennas: TV and mobile at masthead

Electrical

• Solar: 8 x 100W panels (800W total)

• House Batteries: 2 x 220Ah AGM

• Charger: Everdrive 40A (3-bank)

• Inverter: Selectronic 1300W pure sine wave

• Wiring: Solar controllers are lithium-compatible

Ground Tackle

• Primary Anchor: MaxSET 30kg with 70m chain + rope

• Kedge Anchor: 18kg mounted aft with 10m chain + rope

• Windlass: Maxwell RC8 with up/down internal controls and remote

Safety & Misc

• Life Raft: RFD NCIS 8-person

• Life Jackets: Multiple + 2 inflatable PFD/harnesses

• EPIRBs: Multiple

• Flares, Grab Bag, Dock Lines, Fenders

• Fire Safety:

  • 4 x 1kg extinguishers

  • 2 x 5kg extinguishers

  • Fire blanket

  • Smoke detectors

Owner’s Notes & Maintenance

• Vessel cruised conservatively with routine servicing

• Rig inspection & halyard replacement (Brisbane, 2024)

• No electrolysis issues; anodes degrading slowly (prop anodes replaced annually)

• Cosmetic paint bubbling in some areas due to aluminium oxidisation – aesthetic, not structural

• Cabin soles in hulls flex slightly – annoying, but not structural

• Boom bag will need replacement soon

Remarks

LUAR presents a rare opportunity to own a proven, aluminium cruising catamaran with smart systems, redundancy, and long-range capability. From the spacious liveaboard layout to the robust systems, she’s ideal for a cruising family or couple looking for offshore independence, comfort, and safety.