Rottmer releasing gear is used on which type of lifeboats?

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Releasing gear types correspond to how a lifeboat is mounted and launched. Rottmer releasing gear is a release mechanism designed for open lifeboats, where the launching arrangement is straightforward and unobstructed by a canopy or hull structure. Enclosed lifeboats have a canopy and more integrated hull features, requiring different release arrangements that accommodate those protections. Rescue boats and lifeboats with rigid hulls similarly use other systems suited to their specific mounting and launch needs. So, the best choice is open lifeboats, because their launching setup aligns with the design and operation of Rottmer releasing gear.