@humans_at_sea: EPIRB is a safety device carried by a vessel to alert search and rescue services, allowing them to quickly locate you in the event of an emergency. When activated it transmits a coded message on the 406 MHz distress frequency which is monitored by the COSPAS-SARSAT satellite system. #safetyfirst #vessel #sailing #sailor #officer #humanatsea #safe #offshore #engine #epirb #ship #marine #marinecorps #sealife