Various depths and densities of buoyancy materials can be provided in standard blocks or customized shapes, suitable for various types of ROVAUV submersible cable sea pipes. Deepwater buoyancy cables provide low drag distributed buoyancy for various marine, commercial, military, and oceanic applications. There are two connection methods, and the size is suitable for any cable. These floating balls are some universal buoyancy products. Their depth level can reach up to 6000 meters.