Length means something different on a catamaran
A luxury catamaran uses two hulls connected by a broad central platform, so it can produce substantially more floor area than a monohull of similar overall length. That extra beam creates large saloons, cockpits, foredeck areas and cabins, but it also becomes one of the most important practical ownership considerations.
Current yachts to compare
- Sunreef 50 — 15.20m; builder Sunreef Yachts; 9.10m beam.
- Sunreef 70 NEXT — 21.64m; builder Sunreef Yachts; 10.85m beam.
- Sunreef ULTIMA 55 — 16.60m; builder Sunreef Yachts; 5.60m beam; 0.90m draft.
- Sunreef ULTIMA 66 — 22.00m; builder Sunreef Yachts; 7.25m beam; 1.20m draft.
- Itama 54 — 16.44m; builder Itama; 4.73m beam; 1.42m draft; 33.0 knots maximum.
- Arcadia A80 — 23.98m; builder Arcadia Yachts; 6.95m beam; 1.69m draft; 19.0 knots maximum.
- Swan 58 — 19.11m; builder Nautor Swan; 5.27m beam; 2.70m draft.
The Sunreef 50 makes the point clearly: its 15.20-metre overall length is paired with a 9.10-metre beam. The ULTIMA 55 uses a different formula with a much narrower beam. Monohull examples such as the Itama 54, Arcadia A80 and Swan 58 show how the same broad length range produces very different berth, draft and accommodation requirements.
Space and life at anchor
Catamarans can provide multiple large exterior zones and broad interiors on one level. Their stability characteristics at rest are one reason many owners favour them for warm-water cruising. A monohull may offer easier access to conventional berths, a narrower marina footprint and handling characteristics familiar to owners moving up from traditional yachts.
Berthing must be checked early
Do not buy a wide catamaran and investigate the home berth later. Ask marinas for actual maximum beam, not merely maximum length. Check travel-lift width and haul-out options in the cruising region as well. A yacht can be ideal at anchor and still be inconvenient if the support infrastructure does not suit its dimensions.
Sailing and power catamarans
Catamaran is a hull configuration, not a single type of yacht. A sailing catamaran introduces rig and sail considerations, while a power catamaran is judged more heavily on engine installation, cruising speed and fuel use. Hybrid or electric systems add another layer and should be evaluated using the actual fitted specification.
Which hull form fits the owner?
Choose a catamaran when broad living area, multiple deck zones and multihull characteristics match the cruising plan and suitable berthing is available. Choose a monohull when narrower infrastructure access, a particular performance profile or traditional handling is more important. The best answer is operational rather than fashion-driven.