CM52 Catamaran

CM catamarans deliver the performance, accommodation and payload that a growing group of knowledgeable sailors, typically coming from fast monohulls or moving up from heavier catamarans, desire for maximum enjoyment of short and long-term cruising – or even, with the appropriate specification, for race capability.

The CM52 offers the space and payload to cruise in style with family and friends. Her length gives exceptional seakeeping qualities and long-legged motion, yet her light weight allows a modest sized rig which can be easily handled by a couple.

The boat prioritises well-mannered performance and provides everything you need to enjoy a fabulous live-aboard lifestyle, while avoiding unnecessary complexities that decrease reliability and add weight and cost.

 

DESIGN TECH

Fast & efficient – 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.

Centralised weight – 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.

Daggerboards – 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.

Steering positions – 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.

Control from the cockpit – lines led back, with winches close to the wheels for safe single-handed manoeuvres.

Rig configuration – 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 COMFORT

Open plan – sliding cockpit doors open 2m wide to create a large, 6.3m long living space with single level floor, whilst retaining all the central structure required for stiffness, without need for heavy reinforcement.

Visibility – 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.

Flared hulls – 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.

CONSTRUCTION

High-tech structures – 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.

Epoxy resin, infused and post cured – 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 and E-Glass – 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.

PVC core – closed cell PVC core throughout for high stiffness to weight ratio, with no water absorption in the event of localised damage.

Superior internal finish – 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.

Foam cored furniture – ultra-light and laminated in to add to the structure and eliminate creaking.

 

OPTIONS

Our goal is to work with you to specify and build a boat that will perfectly suit your plans.
We offer multiple options, including:

Hull – Rig – Propulsion
.        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 40hp shaft drive diesels, Electric / Diesel Hybrid

Electrical
.        Solar system – Roof + davits mounted
.        Hydrogenerator – Watt & Sea
.        Instrument system – Leading brands
.        UpSideUp – Anti-capsize sheet release system

Accommodation
.        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

Personalised Styling
.        Hull, deck and internal finish – Multiple colour options
.        Carbon spars – Multiple colour options
.        Surface coverings and fabrics – Multiple options

 

CM52 SPECIFICATIONS

.        Length – 15.85m (52ft 2in)
.        Beam – 8.2m (26ft 9in)
.        Hull length: Beam ratio – 13:1
.        Displacement – CE spec – 8 575kgs (18 865lb)
.        Bridge deck clearance  – 0.95m (3ft 2in)
.        Draft – 0.5m

.        Mast length – 19-21.5m (62ft -70ft 5in)
.        Mainsail area – from 78m2 (788sq ft)
.        Solent area – from 40m2 (404sq ft)
.        Staysail area – from 19m2 (190sq ft)
.        Code area – from 85m2 (858sq ft)

.        Engines – 2 x 40hp
.        Cruising speed under engine  – 7.5 knots
.        Top speed under engine – 12 knots
.        Cruising speed under sail – 12-16 knots
.        Top speed under sail – 25+ knots

.        Diesel tanks – 2 x 200lt (2 x 44 gal)
.        Water tanks – 2 x 250lt (2 x 55 gal)

.        Headroom on bridge deck – 2m (6ft 7in)
.        Headroom in hulls – 2m(6ft 7in)

 

SUSTAINABILITY

We acknowledge there are many aspects of building new yachts that are imperfect from a sustainability perspective. There are, however, areas we can tackle and CM yachts have attributes to provide a step in the right direction.

Less materials
Due to their high tech construction our boats are half, or even one third the weight of many cruising catamarans. This means only a fraction of the composite materials are used in building a CM.

Less time under power
This is a true measure of efficiency as sailing is fundamentally, of course, a sustainable way to travel. CM catamarans are able to sail in only a few knots of wind so motoring time is absolutely minimised.

Small engines
Light, easily driven boats require relatively small engines so, when unavoidably needing to motor during calms and when docking etc, diesel consumption is low.

Renewable power generation on board
Solar – We offer options for large solar arrays mounted on the cabin top and coach roof, generally able to meet energy requirements at anchor.
Hydrogeneration – The fast speeds typically enjoyed under sail by a CM means hydrogeneration, using an optional Watt & Sea unit, is highly efficient on passage.

Eliminate need for generator
The opportunity for significant renewable energy generation means the need for a generator can be usually be eliminated. If additional charge is occasionally required, one of the main diesel engines can be used, relatively efficiently due to its small size.

Electric cooking
High levels of renewable power generation also allow the option of electric cooking, eliminating gas on board.

Electric / diesel hybrid option
We offer the option of twin electric motors with a single diesel generator range extender, should this configuration suit your planned use of the boat.

Anything but single use!
Our catamarans are built from high quality materials that offer a long lifespan, with capability to cover large mileage over many years, in the hands of multiple owners.

We will continue to develop sustainable practices in the manufacture and specification of CM catamarans – the job is ongoing and will probably never be done!

Current Composites

Epoxy resin, infused and post cured – 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 and E-Glass – 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.

PVC core – closed cell PVC core throughout for high stiffness to weight ratio, with no water absorption in the event of localised damage.

Superior internal finish – 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.

Foam cored furniture – ultra-light and laminated in to add to the structure and eliminate creaking.

HOME

Our truly efficient catamarans are designed and engineered to sail in very light winds, outrun bad weather and cruise the world in cool simplicity.
A CM’s easily driven nature allows excellent cruising speeds from modest sized rigs – giving an unloaded, safe and easily handled feel on passage. They have light, centralised weight, fine bows and high bridge deck clearance to provide favourable behaviour should large seas be encountered.
CM catamarans don’t set out to provide walk-round beds or the ultimate floor area, but their performance is matched by the space, visibility and payload needed for live-aboard cruising in true comfort – underway as well as at anchor.Their combination of pace and volume can only be achieved through high tech construction that keeps the weight low. We use materials and build systems generally found only in a few larger, high-end boats – and bring them to smaller catamarans.

CONCEPT DESIGNS

The Schionning Design team receives many enquiries about different ideas and concepts for a range of different designs, some of which are out there sailing – while others don’t quite make it that far. The designs on this page do not have completed construction plans or any pre-cutting for kits – they are ideas from customers like yourself that did not reach the water. This could be due to any number of different factors, however we would like to display them here – if there is something you like, we can resume where we left off and complete the design, with further customisation if neccessary, in order to provide you with a custom designed multihull.

So if you’d like to enquire about any of these partially completed design projects, we’d love to discuss with you so please don’t hesitate to contact us.

Concept Designs

THE GROWLER GTR 1500

As a designer you’ve got to love those few clients who want something different and way out there. This design concept is for one of our loyal repeat owners, this being his fourth Schionning and happily loved them all, why wouldn’t you, most of them new cutting edge sailing cats but now looking at the growing power cat market he’s again thinking way outside the square.

We are using the new Whisper hull form we have been developing over the last few years, shallower draft, lower drag ratios and yet still having the superb soft ride and sea keeping ability of our VT series. She has generous hull beam giving huge accommodation in the hulls and high load values. Styling follows our G‐Force trend with the reverse bows, but has the sleek yet aggressive Growler Power Cat look, flexing those muscles.

Specifications

LOA    15.00 metres
BOA     metres
DRAFT    0.500 metres
HEADROOM (Hulls)    Full Standing
HEADROOM (Bridgedeck)    Full Standing
FUEL CAPACITY    2000 litres
WATER CAPACITY    1000 litres approx
PAYLOAD    TBA
DISPLACEMENT    6000 kg
BRIDGEDECK CLEARANCE    0.950 metres
MOTOR OPTION    4 x 250hp Outboards
CRUISING SPEED    30-35 knots
TOP SPEED    40+ knots