The glitzy machine, billed by its maker as its "newest state-of-the-art" mower, will trim a lawn on the on the Celebrity Solstice cruiser.
The 122,000-tonne luxury liner from Germany launched late last year and included a 2,130sq m lawn between the ship's funnels on the upper deck.
Ship owner Celebrity Cruise Lines needed a quiet mower to avoid disturbing guests playing bowls, croquet and golf putting or enjoying a picnic.
Facilities-management company Green Roof Services contacted The Turf Care Co, Ransomes Jacobsen's distributor in Germany.
The kit boasts a choice of power units, a 4.6hp Honda petrol engine powering a 48V genset or a 48V drop-in battery pack.
The lawn is grown on a porous, lightweight growing medium instead of soil. A 90mm layer of heat-expanded calcium clay is mixed with washed volcanic pumice and a polypropylene Geogrid stabilises layers to withstand foot traffic.