Hi, oh seasoned wised ones of the forum and the sea! You know who you are! Please explain to me (or where I can go to get accurate info) if the EPIRBS, PLB AND ELT are used interchangeably nationally and internationally, especially the PLB. I am most interested in the PLB as a possible graduation gift. I understand PLB's are activated manually and if I read correctly, a person has to keep the antenna up and out of the water. Are PLB's even a practical gift? Ds will be sailing on a vessel. Are there PLBs on safety rafts? My guess that depends on the company/country? What are the best PLBs? PMing me is fine if you don't want to come across as a sales person for any specific company. Thanks for you help. Looking forward to some answers.