The Cobham SAILOR 6249 VHF Survival Craft is Wheelmark (MED-B) approved and complies with the ETSI EN 301 466 standard. This allows it to be installed as a fixed mounted VHF in a Survival Craft. It is rated waterproof to both IPx6 and IPx8 and in order to achieve this rating the SAILOR 6249 VHF Survival Craft has been subjected to an extreme series of testing, proving its resistance to fluctuating temperature, shock, water and oil among other environmental challenges. You can trust the SAILOR 6249 VHF Survival Craft in a distress situation because it has been designed for just that. It features the same virtues and functionality that has positioned other SAILOR VHF models as clear leaders in the sectors they are designed for.