Most Stable Boat For Cross Ocean Travel: In regard to cross-oceanic voyages, the issue of stability reaches the forefront to promote safety and comfortability with the unpredictability of open seas. No boat can technically escape the effect of rough seas, but some types and designs have a better ability to maintain the stability position.
Catamarans and Trimarans
In the ocean crossing, the multihulls (Catamarans and Trimarans) stand the reputation of being the most stable by virtue of their wide stances. The single-level catamarans and trimarans have two and three hulls respectively and have a very good initial stability, that is, cannot heel (lean to one side) easily.
The large footprint gives less rolling motion, and the ride is much smoother and comfortable than monohulls, being particularly gentle when running downwind. Their great stability at first can, however, imply a sharper tip-over when nudged too far, and are in general more troublesome to flip upright when flipped over.
Monohulls:
There is also great stability among monohulls used in bluewater (sailing the ocean) boats; however, this is achieved differently.
They are deep keeled and are highly ballasted down in the hatches. Such a low center of gravity, on a ship, gives a strong “righting moment”, i.e. it should recover its upright position after being healed well over.
Skeg-hung rudder designs have simple full-keel or fin-keel by virtue of directional stability and strength. They will roll more as compared to multihulls in heavy seas but they tend to be more tolerant and recoverable to extreme conditions.
Another motor yacht used to travel long distances into the ocean is referred to as trawlers. They are broadly defined by large displacement, and in many cases employ some kind of stabilization system such as active fins or gyroscopes to reduce roll. They have slower and more economical cruising speeds that give a smoother ride under varying conditions.
Finally, it all boils down to which boat is the most stable, according to particular conditions and needs. Multihulls are more comfortable and less roll-prone, whereas well-engineered monohulls have overall righting ability and stability as the primary concerns.
