hand flares signal can be used on board brightly enough heavy smoke Hand Flares singal:used for leading safe landing of ships,vessels, liferaft; offshore platform signaling and indicating positionHand Flares signal's discription :Characteristics:This product complies with relevant requirements of SOLAS 74/96,LSA stipulation and it is MSC.218(82) amendment and MSC.218(70) lifesaving equipment ...