To qualify as a Type B-60 vessel, which of the following is a requirement?

To qualify as a Type B-60 vessel, having weather-tight steel hatch covers is a key requirement. This feature is particularly important for maintaining the vessel's integrity and stability, as it helps prevent water from entering the cargo spaces, which could jeopardize stability and safety at sea. Ensuring that the hatch covers are weather-tight contributes to the overall strength and seaworthiness of the vessel, especially under severe weather conditions, where managing water ingress is crucial.

Other requirements related to vessel dimensions or structural elements may not apply to the classification of a Type B-60 vessel, making the presence of weather-tight steel hatch covers a definitive criterion that aligns with stability standards and safe operation at sea.