Sailing Yachts (Single-hulled or double-hulled / Catamarans)
The sizes and features vary on each ship. Each ship is allocated to a particular cruise itinerary, usually for the entire season.
Most cabins are double-bed cabins (small double beds), and some cabins have ensuites, some do not (even on the same ship, there can be differences).
Only in the case of unforeseen circumstances (force majeure) is a replacement ship offered.