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2019 Mumby Catamaran Motorsailer

Listed
Expired
$690,000 USD

Seller's Description

When I got my first look at Manta, a custom built Tim Mumby designed 47′ Power Catmaran, I could hardly believe my eyes. Well known for his sailing catamarans, this is the first and so far only Mumby power cat in existence. She is the ultimate expression of a world class cruising yacht, with a range over 3,000 nautical miles on 1300 liters of fuel. Add to that the sloop rig on a short 6 meter aluminum tabernacle mast and that range goes closer to 3500 miles.

Constructed from the ground up over a 2 year period in the Philippines by the current owner, with over 40 years and 3 circumnavigations of sailing experience himself. She was launched in 2020 then motorsailed up to Dutch Harbor, then down the west coast to her current location here in La Paz, Mexico. Over 2,800 watts of solar power, she is completely set up for off grid long distance voyaging. Every detail was designed and built with an eye toward ease of maintenance and courageous practicality. She comes with every spare part you can think of and is ready to take you on your own circumnavigation. We have tons of photos demonstrating how this work of art came into existence. Just drop us an email and we’ll send you a link. You have to check this one out.

Currently located right here in the heart of paradise and home to some of the world’s most renowned cruising grounds, La Paz, Mexico, the gateway to the Sea of Cortez. Dozens of beautiful anchorages, many with white sand beaches and all with crystal clear warm waters teaming with exotic sea life. Let the experts in yacht ownership here in the Mexico, show you how easy it is to begin your cruising dreams today.

Additional Details

Galley

  • REFRIGERATION: Yes
  • WATER SYSTEM: Pressure
  • WATER HEATER: 3 Gal. Instant electric
  • STOVE: Two, propane and electric, 4 burners
  • SINK: Single
  • OTHER: Clothes washer Navigation and electronics

  • SSB: Icom IC-7300 SSB/HAM - needs installation to be finished
  • RADAR: Yes, 36-mile range
  • RADAR ALARM: Yes
  • VHF: Standard
  • GPS: 2 Garmin
  • RUDDER ANGLE: Yes
  • DEPTH SOUNDER: Yes
  • HAILER: Yes
  • AUTOPILOT: Simrad plus spare
  • PLOTTER: Garmin 942
  • SATELLITE COMMUNICATIONS: Yes
  • OTHER: Iridium GO w/antenna Electrical

  • BATTERIES: Yes, 800 amp-hours total
  • BATTERY MONITOR: Yes
  • ALTERNATOR: 2 x 125 amps
  • AC VOLTAGES: 110V and 220V
  • DC VOLTAGES: 12V
  • SOLAR PANELS: 8 Panels at 365W each. 2880 watts Mechanical

  • BILGE PUMP: 6, auto
  • BILGE BLOWER: 2
  • FIRE EXTINGUISHING: Manual
  • FUEL FILTERS: 6 Racor 500
  • FUEL SHUT OFF: Yes
  • LUBE OIL SYSTEM: Yes
  • FRESH WATER COOLING SYSTEM: Yes
  • HOLDING TANK: Electric
  • HEATER: Dickinson
  • WATERMAKER: 18 gal/hr
  • FULL SHAFT: Yes
  • STEERING: Hydraulic. Emergency tiller system
  • TRANSMISSION: 2 Yanmar, opposite rotation
  • OTHER: Internal fuel transfer and polishing system
  • Never anything other than R.O. water in water tanks Deck and hull

  • ANCHOR: 88 lbs. Rocna Titanium with 3/8” 250’ feet chain
  • ANCHOR 2: FX55 Fortress
  • ANCHOR 3: 22 Hightek Danforth
  • ANCHOR 4: Dinghy anchor
  • WINDLASS: Electric
  • DINGHY: Yamaha 8 HP
  • BOW ROLLERS: Yes
  • NAV LIGHTS: Tricolor
  • SPREADER LIGHTS: Yes
  • DECK LIGHTS: Yes
  • LIFELINES: Solid aluinum
  • LADDER: Swim
  • DINGHY DAVITS: Manual
  • DECK WASH: Saltwater
  • DECK MATERIAL : Aluminum
  • OTHER : Cockpit awning, deck covers Hookah diving setup, good to 60’ depth Sail

  • MAIN: Yes
  • JIB: Yes
  • SPINNAKER: Yes
  • TYPES OF SAILS: Hyde, dacron
  • TRAVELER: Yes
  • MAST: Aluminum, deck stepped
  • STANDING RIGGGING: Wire Safety

  • LIFEJACKETS: 6
  • LIFE RINGS: 2 Fishing

  • REELS: 14
  • OTHER: Fish gear and tackle
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Specs

Designers
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Builders
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Associations
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# Built
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Hull
Catamaran
Keel
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Rudder
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Construction
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Dimensions

Length Overall
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Waterline Length
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Beam
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Draft
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Displacement
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Ballast
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Rig and Sails

Type
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Reported Sail Area
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Total Sail Area
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Mainsail
Sail Area
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P
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E
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Air Draft
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Foresail
Sail Area
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I
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J
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Forestay Length
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Auxilary Power

Make
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Model
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HP
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Fuel Type
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Fuel Capacity
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Engine Hours
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Accomodations

Water Capacity
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Holding Tank Capacity
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Headroom
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Cabins
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Calculations

Hull Speed
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Hull Speed

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Formula

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL

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Classic formula: ?
Sail Area/Displacement
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Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

Formula

SA/D = SA ÷ (D ÷ 64)2/3

  • SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D: Displacement in pounds.
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<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
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Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Formula

Ballast / Displacement * 100

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<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
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Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

Formula

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
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<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
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Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Formula

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)

  • D: Displacement of the boat in pounds
  • LWL: Waterline length in feet
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet
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<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
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Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

Formula

CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
?
<2: better suited for ocean passages
>2: better suited for coastal cruising

This listing is presented by MultihullCompany.com. Visit their website for more information or to contact the seller.

View on MultihullCompany.com

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