The Castoldi Tender 21 powerboat is produced by the brand Castoldi since 2014. The Castoldi Tender 21 is a 6.30 meters RIB boat with inflatable sides with accommodation for 12 people and a draft of 0.50 meters which can reach speeds of up to 37 knots. The boat has a other hull with a CE certification class (C) and can navigate along the coastline and on rivers and canals.