Marine Day Signal Ball
High quality cheapest marine signal ball D6-1/2/3/4/5. In accordance with the 1972 international convention for preventing collsions at sea (consolidated version).
Product inspection standard: Requirements of the ZC regulations for the statutory survey of ships and offshore installations and international marine anti-collision regulation (1972). 1996 Amendments to the SOLA1974, and CB/T3142-94, CB/T428-93.