Catamaran aka 'tie log'
Although the catamarans are harder to tack than monohulls, due to a shorter keel allows them to sail in shallow waters. Catamarans have a higher average speed and are definitely less likely to turn upside-down in a 'beam-wise' manner but otherwise tend to pole-axe, in other words the bow sinks into the water and the catamaran capsizes. Compared to monohulls catamarans are faster due to their thin composing hulls, small displacement, wider beam, which provides stability, and upright position of the sail - if there is one. Nowadays catamarans are often used as commercial vessels, as a high speed ferry and there are numerous passenger routes all around the world.
But let's get down to brass tacks. Today we have two catamarans, by H20 and Atlantis yachts. Both are of same length (52') and same beam (21'). Both have twin inboard diesel engines, H20 - 200 hp each and Atlantis - 350 hp each, which is why it's much faster, it's average speed is 20 knots and maximum speed is 27 knots while H20 speeds up to 19 knots. Both catamarans are fiberglass hulled (H2O's hull is made of fiberglass sandwich). Both boats are quite capacious: they have almost equal fuel capacity, but Atlantis has a far more voluminous holding tank (80 gallons to H2O's 26 gallons).
Regarding the electronics, both catamarans have full navigational equipment: radars, map plotters, GPS navigators, VHF radios, sounders as well as main saloon entertainment centers with satellite TVs. Both boats have powerful and reliable generators and all necessary electrical equipment.
But it's the design that makes these two boats completely different. Yes, H2O may be a bit slower, but its design is something to live for. Atlantis represents the everlasting classic style in everything: decoration, furnishing, settees, windows and furnishing. Sure it's not 'classicism'-classic but still it's quite traditional. H2O's design is something absolutely fabulous. It's pure aesthetics and symmetry. Once you see it, the word style is the first to flash through your mind. Everything from light blue linen to fabulous salon all-width windows is worth resting eyes on. Blue, light blue, dark blue and white dominate the color scheme. But what catches the eye is the sleek, stylish and really beautiful dark blue hull. It's possible that on cloudy days it would look a bit gloomy but on sunny days it must look just fascinating, like the catamaran itself.
A catamaran as a recreational vessel may at first seem somehow exotic and unorthodox but considering it's cruising characteristics and the fact that other features are more or less similar to those of monohulls, one can try and acquire one. Anyway being different is no worse than being like others.
| H2O catamaran | Atlantis catamaran | |
| LOA | 52'6" | 52' |
| Beam | 21' | 21'10" |
| Flybridge | Yes | Yes |
| Engines | Twin diesel inboard Nanni Diesel 200 hp each | Twin diesel inboard Yanmars 350 hp each |
| Staterooms | 2 | 2 |
Sources: http://www.wikipedia.org, http://www.answers.com










