On 5 November, the crew of a Belgian Air Force Agusta A-109 Helicopter noticed fishing vessel Lainey, sinking with two crew on-board approximately 6 miles north-north-west of Wells. The A-109 was on a training mission and discovered the unfortunate, they quickly decided to drop a liferaft into the water and then held position above the casualties to assist location and until the arrival of the U.K. coastguard. (www.aviation24.be) 更多...
In this interview, the fisherman tells the boat flipped in 20-30 seconds after being hit by a rogue wave. Probably no time to activate any of those you mention. https://www.hln.be/nieuws/buitenland/video-spectaculaire-beelden-tonen-redding-van-gekapseisde-vissersboot-uit-oostende~a708dd97/