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Two Oceans Marine launches largest Magnum Power Catamaran to date

by Kirsten Veenstra 27 Apr 2020 10:50 UTC

The Magnum 46 Power Catamaran Walkaround Model is the newest edition to the Magnum Power Catamaran range from Two Oceans Marine Manufacturing.

Two Oceans Marine started building the Magnum Power Catamaran range in 1996 with the Magnum 780 and to date the Cape Town-based manufacturer of custom sail and power catamarans has launched an impressive number of these vessels. The current range includes The Magnum 23 Centre Console, the Magnum 2750 Walkaround and Centre Console, the Magnum 32 Walkaround and Full Cabin Sportfisher, and the Magnum 36 Walkaround - and now the Magnum 46 Walkaround.

The Magnum Power Catamaran range is highly customisable for a wide range of commercial and leisure applications and these vessels are very popular for sportfishing and leisure boating.

The Magnum 46 Power Catamaran was developed from the highly successful Magnum 36 Power Catamaran and has been re-engineered to allow for a greater waterplane area. This is to primarily allow for an increased load-carrying capability and superior comfort and increased running speeds. Essentially, the waterline length and the beam have both been increased, and the tunnel entry and exit zones have been modified.

In order to reduce overall weight, the method of construction has been altered to incorporate the use of foam sandwich construction for all parts of the vessel above the waterline.

The in-house design brief was to improve on the performance and load carrying capabilities of the 36 foot hull. This has been accomplished and initial calculations and sea trials returned performance figures that are an improvement on those anticipated. The hull is well suited to inboard power and has proven to be fuel efficient, comfortable, and fast for its size.

The new Magnum 46 Power Catamaran, like its predecessors, is built to endure the Cape of Storms. The deck layout has been designed specifically to satisfy the needs of the serious fisherman. The walkaround cabin makes it possible to operate safely in a 360 degrees arc, even in challenging sea conditions.

She can accommodate six sport fishermen very comfortably for an overnight at sea. The Magnum 46 has a very comfortable saloon area, complete with a galley, and two cabins. She has both a large heads and a comfortable separate shower.

The catamaran hull provides excellent stability with a dry and soft ride. Particular emphasis has been placed on following sea performance as the vessels in the Magnum Power Catamaran range vessels typically travel extended distances in open waters.

Specifications and dimensions of the Magnum 46 Power Catamaran Walkaround model:

Key Specifications:

LOA: 14.02m
Beam: 4.2m
Draft: 0.700m
Boat weight - operational, Incl power/fuel: ± 11000 kg
Fuel - Standard capacity: Enough for approximately 250 nautical miles

Standard Specifications:

Aft Deck

Two below deck fish/ice storage hatches
Deck mounted workstation table
2 x Access hatches to fuel tanks
2 x Automatic bilge pumps for hull drainage
1 x Remote Manual bilge pumps for emergency hull drainage
2 x Electric drain pumps for drainage of below deck storage hatches
Built in insulated bait storage box
Deck wash hoses to port and starboard sides

Cabin Interior

Steering console housing hydraulic steering pump, engine instrumentation, and electronic units
Upholstered heavy duty helm chair
Bench seating for crew with built in storage drawers
Access door to storage cupboard with shelves
Timber drawer unit for tackle storage
Access door to fully enclosed electric marine head and separate shower
Sliding doors for security / weather protection
2x separate bunks in hulls
Sliding opening cabin side windows
Galley to incorporate induction stove, microwave
Rod storage area with holders to be finalized with client
Built in cooler boxes under aft facing seats

Forward Deck

Moulded non-skid surface with safety rails
Anchor locker - Self-draining, ahead of collision bulkhead
Bench seat with built in storage

Fuel System

Fuel tanks constructed to marine specifications 800l per side, complete with:

Full baffles, inspection plate, fill suction and vent lines
Total Useable volume to allow for 250-mile range
Remote level gauges are located at main control station
Water separator filters, isolating valves, and engine primer bulbs located in storage hatches on aft deck
Marine approved flexible fuel piping used throughout


2 x heavy duty Delco engine start batteries with isolating switches
1 x 5 kw lithium ion MasterVolt house battery with selector switch
Mastervolt 3500w inverter 220v and charger
Marine grade switch panel with circuit breakers connected via bus bars
Marine grade silicone tin wiring
12-volt horn
Cabin lights
2 x spreader lights to illuminate aft deck
Navigation lights and Anchor light
Bilge pumps, located as specified above, are wired through the switch panel, and have their integral float switches, hot-wired to the house batteries

Stainless Steel

All fittings are marine grade 316 stainless steel welded and polished Bow rail
Handrails strategically located
Bimini support and 4 rod holders
4 x rod holders on cabin sides
14 x gunwale mounted rod holders
6 x trolling squares in gunnels
1 x Anchor bollard and roller guide
6 x Heavy duty deck cleats
1 x Heavy duty bow eye
2 x Heavy duty transom eyes
Gaff holders
10 x stainless steel cup holders


Antifoul hull
Full safety equipment for 12 persons required to satisfy SAMSA category B > 9m
Container with boat's operating manual, which includes wiring diagrams, mechanical layout etc. as well as manuals of all installed equipment


Dual hydraulic steering system with stainless steel steering wheel
Dual engine controls
2 x Digital Tachometers, 1 x engine start-stop panel
Swivel helm seat
Bench seat with storage locker and moulded Bimini top


Furuno 15 tz touch Navnet system at main control station
Furuno 15 tz touch Navnet system on upper helm
6KW open scanner radar and AIS
Autopilot with display at main control and fly bridge
2 x Icom VHF radios
Fusion marine sound system incl amp and internal / external speakers
Furuno 1150 Echo sounder at main station


2 x Cummins QSC6.7 550hp inboard diesel engines
Complete with electronic controls, power steering
Temmet stainless shaft, Teinbridge propellers and rudders

Optional Extras

Teak deck, interior cabin floor and fly bridge
Fly bridge console and seat covers
Windscreen cover
Engine bikini covers
Fresh water tank (100 litres) Transom shower incl pump and fittings
Hot/cold water system
Lees outriggers

For more information visit

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