With accommodation in both hulls and the central structure, catamaran sailboats have certainly got ample space below to make good cruising homes - but not all of them make good long-term cruising sailboats.
And catamarans work better in some parts of the world than others. In the Caribbean for example, where they're very popular, safe leeward anchorages abound - so there's little reason to tie up in expensive marinas.
In other parts where safe anchorages are not so easy to find, mooring your catamaran in a marina can be pretty expensive. Expect to pay double what you'd pay for a monohull of similar length overall.
Charterers though, looking for a spacious floating home for a few weeks that doesn't heel over, love them.
And herein lies the problem with most, but not all, production catamarans...
Their ability to sail upright, together with their commodious accommodation makes them very attractive to the bareboat charter market.
The temptation is for the catamaran manufacturer to pander more to the lucrative charter market than the prospective cruising owner, and maximise accommodation - and hence the income for the charter company - to the detriment of everything else.
Three separate cabins, each with a double berth, is the norm in a 38 foot catamaran sailboat designed for chartering.
Unlike a monohull, these double berths stay reasonably flat and level when underway, so individual seaberths with leecloths aren't necessary.
In multihull sailboats of this type, the bridgedeck is often set low to provide standing headroom in the saloon, when it would be better set higher to enable waves to pass unhindered beneath it.
The resultant noise and slamming when underway is not something that can be easily ignored.
The windage of these bungalow-proportioned multihulls has lead to the catamarans' reputation as a poor windward performer, and this is particularly so when reefed down in heavy weather.
Overloading catamaran sailboats will, as with all light displacement sailboats, decrease the Sail-Area/Displacement Ratio and spoil performance.
Consequently small, high volume cats, when loaded with the equipment for offshore cruising can become, well, dogs. And it's for this reason that, in my opinion, cruising catamarans only begin to make sense at around 45 feet.
Some, like the the magnificent example shown above, are manufactured from hi-tech materials - carbon composite hull, carbon masts...
On the wind, owing to their minimal draft, catamarans can make considerable leeway. Most have vestigial keels to resist this tendency, but those designed to really tramp on have daggerboards.
At sea, their inability to absorb the small variations in the wind by heeling gives them a peculiar, lurching movement which can be a bit disconcerting until you get used to it.
Also, the rapid variations in speed and the effects these have on the apparent wind direction, mean that wind vane self-steering systems find it very difficult to keep multihulls on a straight course
But a properly designed catamaran from the board of a designer unconstrained by the requirements of the charter market can make a fine cruising boat.
In reasonable conditions a well-sailed catamaran can often arrive at an upwind destination earlier than a monohull of similar length - any inferior pointing ability having been compensated by a higher speed through the water and resulting VMG (Velocity Made Good).
Under power, a catamaran's manoeuvrability can be remarkable.
If they have an engine in each hull, putting one astern and the other ahead will turn a catamaran sailboat in its own length with ease - a redeeming feature in a marina, where you're likely to attract a hefty surcharge for a berth.
But as a monohull man myself, it does seem a bit strange to have a sliding patio door on a sailboat. Where's the potted plants?
Artwork by Andrew Simpson
As a pure sailing machine, a cruising trimaran will beat a cruising catamaran sailboat of the same length hands down.
But squeezing the same number of berths into the trimaran of a similar length will mean that the living accommodation below will be disappointing.
To all, that is, but a small crew that enjoy sailing really fast and are willing to accept spartan living conditions below decks.
For a great deal about trimaran design by an expert on the subject take a look at SmallTrimaranDesign.com
Click below to see contributions from other visitors to this page...
Lagoon 42 by TPI (1993)
Ours is one of the early Lagoon 42's built by TPI in Rhode Island. My husband and I have lived aboard for 6 to 9 months per year, cruising from Connecticut …
G-Force High Tec 44' Trimaran
Designed by Glenn Henderson and built in 1992 by Hans Geissler of G-force and G-Cat catamaran fame, this G-Force High Tec 44' Trimaran is 44' long by …
Admiral 38 Catamaran
My 2005 Admiral 38 catamaran Afloat is a 38 foot long, 23 foot beam, owner's version (3 stateroom) beauty. Admiral cats were manufactured in South …
47' Ferrel Custom Catamaran
Having sailed many ocean miles in both monohulls and catamarans, the catamaran is without a doubt the right choice. Having recently completed a world circumnavigation …
Reynolds 21 Catamaran
This is my first boat to own. I've sailed on other monohulls and raced on them and also sailed on trimarans which has turned me away from monohull sailing! …
Aristocat 1973 30ft British built cruising catamaran Not rated yet
I prefer sailing upright. To me it's less twist on ankles and other limbs and much less likely to slip over or be thrown sideways. I was also limited …
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