On sale, 2017 Lagoon 620 Essence with 5 guest cabins The LAGOON 620 on offer is the 114th hull from a highly acclaimed series of sailing catamarans. Virtually as good as new, it's arguably one of the best outfitted 620 Essence on the market. The 10-meter beam provides roomy interiors along with a variety of external living spaces, including the cockpit, flybridge and foredeck. .