Jim Buoy Man Overboard Pole and ACR rescue light. 10 foot overall length in 2-sections, MOB flag, long floating tether to connect to light or other throwable device, backstay mounting hardware for fast deployment. Includes ACR floating buoy light for rail or bulkhead mount and connect to pole. $75.
http://www.jimbuoy.com/pages/marine/overboard_poles.htm
https://www.acrartex.com/products/sm-2-marker-lights_discontinued/