As we know, each bomber has two crews, a port and starboard (or it had). Instead of calling then port and starboard call them Oberon and Oberoi for instance. Instantly 2 boats for the price of one.
Great lateral thinking PN!
Next pair could be VICTORY and VICTORIOUS, but VICTORY would always have to be the off crew - and inevitably the "port" crew .....
As they spend most of their time submerged, who would know?
Not all of them apparently .....
Jack