Section 144.300 - Stability standards for an existing vessel(a) The owner or managing operator of an existing vessel operating under a stability document must be able to readily produce a copy of such document.(b) The owner or managing operator of an existing vessel not operating under a stability document must be able to show at least one of the following:(1) The vessel's operation or a history of satisfactory service does not cause the stability of the vessel to be questioned by either the Coast Guard or a TPO engaged to perform an audit or survey.(2) The vessel performs successfully on operational tests to determine whether the vessel has adequate stability and handling characteristics.(3) The vessel has a satisfactory stability assessment by means of giving due consideration to each item that impacts a vessel's stability characteristics which include, but are not limited to, the form, arrangement, construction, number of decks, route, and operating restrictions of the vessel.