It seems exceedingly hard to locate sources for these two particulars when it comes to Britannic. For the other two we have:
Olympic: signal letters HSRP, callsign MKC
Titanic: signal letters HVMP, callsign MGY
Does anyone know what Britannic’s callsign and signal letters were?
Olympic: signal letters HSRP, callsign MKC
Titanic: signal letters HVMP, callsign MGY
Does anyone know what Britannic’s callsign and signal letters were?