OVERVIEW
The CM46 is the result of experience gained supplying and consulting on the construction of over forty multihulls – earning a reputation as the go-to manufacturer of light weight performance multihulls, built utilising the latest construction methods.
Developed in conjunction with Schionning Designs, the CM46 offers an excellent blend of high performance and cruising capacity, made possible by diligently controlling the build weight.
CM46 SPECIFICATIONS
- Length – 14.2m (46.5ft)
- Beam – 7.4m (24.4ft)
- Hull length: beam ratio – 13.5:1
- Displacement light ship – CE spec – 6 500kgs (14 330lb)
- Bridge deck clearance – 0.95m (3.2ft)
- Draft – 1.2m
- Mast length – 18m (59ft)
- Optional mast – 19m (62.34ft)
- Mainsail area – from 68m2 (732sq ft)
- Overlapping genoa area – from 46m2 (495sq ft)
- Staysail area – 17m2 (183sq ft)
- Code 55 area – from 92m2 (990.28sq ft)
- Engines – 2 x 30hp
- Cruising speed under engine – 6.8 knots
- Top speed under engine as light ship – 10 knots
- Cruising speed under sail as light ship – 12-16 knots
- Top speed under sail as light ship – 25 knots plus
- Diesel tanks – 2 x 150lt (2 x 40 gal)
- Water tanks – 2 x 200lt (2 x 53 gal)
- Headroom on bridge deck – 1.85m to 2m
- Headroom in hulls – 1.85m to 2m
DESIGN TECH
Due to the reduced weight of the main structure and carefully chosen gear, we are able to design an efficient, fast, easily driven hull that gives a feeling under sail only achieved by the lightest, stiffest boats. The ability to sail in only a few knots of wind minimises the need to motor.
Long, slim bows are flared inboard giving reserve buoyancy if driven hard in waves, plus additional space in the hulls.
The centre of buoyancy is located aft of the middle of the hulls, with weight concentration of heavier equipment strictly close to midships to reduce pitching. Shaft drive engines are moved forward with water and diesel tanks located just aft of the mast, below cabin soles to lower the centre of gravity. Optimum hull rocker starts further forward.
High bridge deck shifted aft, with the bow section proportionately lengthened, to reduce slamming. Hull freeboard is kept low to reduce windage and excess weight.
High aspect boards are essential for upwind pointing ability and speed. Our inward angled, carbon boards can be raised for downwind balance, making the autopilot’s job easier and more reliable. Raised boards increase safety in squalls and waves by allowing the boat to slide sideways.
Twin, outboard helms offer clear visibility when sailing or docking, without looking through windows. The versa helm option allows the pedestals to hinge inboard to protected steering positions within the cockpit.
DESIGN TECH
Lines led back, with winches close to the wheels for safe single-handed manoeuvres.
The mast is mounted 50% aft to create a large foretriangle space for a staysail, headsail and Code sails. It reduces the mainsail area, for easier handling and reefing. The mainsheet track is located on the transom beam for optimum stiffness and weight saving.
Structural longeron provides a tack point aft of the forestay for the staysail – and an integrated bowsprit for Code and downwind sails.
Curved forward cross beam for increased stiffness and, importantly, to increase wave clearance in adverse conditions. Both longeron and forward beam are laminated into the hull structure for maximum stiffness.
Multiple safety features including crash bulkheads in the bow sections and forward of the rudders – sealed watertight compartments to contain flooding and give potential for the boat to sail to safety – life raft stowage integrated into the longeron for rapid deployment.
DESIGN TECH
Due to the reduced weight of the main structure and carefully chosen gear, we are able to design an efficient, fast, easily driven hull that gives a feeling under sail only achieved by the lightest, stiffest boats. The ability to sail in only a few knots of wind minimises the need to motor.
Long, slim bows are flared inboard giving reserve buoyancy if driven hard in waves, plus additional space in the hulls.
The centre of buoyancy is located aft of the middle of the hulls, with weight concentration of heavier equipment strictly close to midships to reduce pitching. Shaft drive engines are moved forward with water and diesel tanks located just aft of the mast, below cabin soles to lower the centre of gravity. Optimum hull rocker starts further forward.
High bridge deck shifted aft, with the bow section proportionately lengthened, to reduce slamming. Hull freeboard is kept low to reduce windage and excess weight.
High aspect boards are essential for upwind pointing ability and speed. Our inward angled, carbon boards can be raised for downwind balance, making the autopilot’s job easier and more reliable. Raised boards increase safety in squalls and waves by allowing the boat to slide sideways.
Twin, outboard helms offer clear visibility when sailing or docking, without looking through windows. The versa helm option allows the pedestals to hinge inboard to protected steering positions within the cockpit.
Lines led back, with winches close to the wheels for safe single-handed manoeuvres.
The mast is mounted 50% aft to create a large foretriangle space for a staysail, headsail and Code sails. It reduces the mainsail area, for easier handling and reefing. The mainsheet track is located on the transom beam for optimum stiffness and weight saving.
Structural longeron provides a tack point aft of the forestay for the staysail – and an integrated bowsprit for Code and downwind sails.
Curved forward cross beam for increased stiffness and, importantly, to increase wave clearance in adverse conditions. Both longeron and forward beam are laminated into the hull structure for maximum stiffness.
Multiple safety features including crash bulkheads in the bow sections and forward of the rudders – sealed watertight compartments to contain flooding and give potential for the boat to sail to safety – life raft stowage integrated into the longeron for rapid deployment.
options
Our goal is to work with you to specify and build a boat that will perfectly suit your plans. We offer many options, including:
Carbon fibre hull components
Main bulkheads, Bridge deck, Cabin top, Full carbon
Helm stations
Twin wheels, Twin tillers, Twin versa helms (Up&Out for visibility – Down&Under for protection)
Mast
Aluminium, Fixed carbon fibre, Rotating carbon fibre, 17.5m or 19m lengths
Boom
Aluminium, Y-section carbon fibre
Sails
Full range
Headsail sheeting
Self tacking, Overlapping
Propulsion
Twin 30hp shaft drive diesels, Electric / Diesel Hybrid
. Solar system – Roof + davits mounted
. Hydrogenerator – Watt & Sea
. Electronics system – Leading brands
. UpSideUp – Anti-capsize sheet release system
. Layout – 3 or 4 double cabins
. Saloon and cockpit – Standard design, Ability to customise
. Cooking system – Gas, Electric
. Refrigeration – Additional fridge / freezer capacity
. Watermaker
. Washing machine
. Cabin heating
. Hull, deck and internal finish – Multiple colour options
. Carbon spars – Multiple colour options
. Surface coverings and fabrics – Multiple options
Construction
We use the materials and controlled build processes generally found only in a few larger, high-end boats – and bring them to smaller catamarans, using our many years of experience creating very light multihulls.
Optimum strength resin system, as used by the best race-boat builders for the most demanding applications. Epoxy resin is not only the strongest, it also has zero water absorption and this combination maximises the lifespan of the boat.
Carbon fibre is used for local reinforcement as standard, with various options up to full carbon construction to achieve optimal weight and strength to suit individual budgets. Laminates specs are engineered to suit each part of the boat and include extra strengthening in the bow area to minimise collision damage.
Closed cell PVC core throughout for high stiffness to weight ratio, with no water absorption in the event of localised damage.
Our lamination and infusion process delivers an excellent base-level interior surface, which we fair and paint to finish. This adds many man-hours but avoids the weight penalty of rougher internal laminate with the cosmetic need for panelling to hide it.
Ultra-light and laminated in to add to the structure and eliminate creaking.
DESIGN comfort
Sliding cockpit doors open 1.8m wide to create a large, 5.4m long living space with single level floor, whilst retaining all the central structure required for stiffness, without need for heavy reinforcement.
Significant attention has been paid to creating panoramic visibility from the saloon and cockpit, whether standing or sitting.
Sofas and dining spaces both inside and outside for quality of life, whatever the weather – on passage and at anchor.
Large galley with exceptional worktop and stowage space for this sector – and amazing views.
Design Comfort
Forward facing chart table with large instrument panel.
Plenty of ventilation throughout the boat, including four large opening window hatches at the forward end of the saloon for air-flow at anchor.
Topsides widen significantly above the waterline to create volume in the hulls for queen size beds and ample stowage space. The starboard owner’s hull includes a large bathroom forward, along with practical wet locker and washing machine spaces.
Convertible port forward cabin for interchangeable set-up in double bed, twin bunks or workshop/storage modes.
Design comfort
Sliding cockpit doors open 1.8m wide to create a large, 5.4m long living space with single level floor, whilst retaining all the central structure required for stiffness, without need for heavy reinforcement.
Significant attention has been paid to creating panoramic visibility from the saloon and cockpit, whether standing or sitting.
Sofas and dining spaces both inside and outside for quality of life, whatever the weather – on passage and at anchor.
Large galley with exceptional worktop and stowage space for this sector – and amazing views.
Forward facing chart table with large instrument panel.
Plenty of ventilation throughout the boat, including four large opening window hatches at the forward end of the saloon for air-flow at anchor.
Topsides widen significantly above the waterline to create volume in the hulls for queen size beds and ample stowage space. The starboard owner’s hull includes a large bathroom forward, along with practical wet locker and washing machine spaces.
Convertible port forward cabin for interchangeable set-up in double bed, twin bunks or workshop/storage modes.
