Years ago I acquired a plastic Sea Bird, a lovely sleek submarine-like speed boat.
I recall that the battery operation didn't work but Bill managed to fix it.
I parted company with my Sea Bird some time later. Then two more, including a yellow one, surfaced in 2015 in Ferryman's collection.
Recently another pair appeared on Ebay, this time with gorgeous boxes.
You can see the make as well on these boxes. Its a new one on me, Cosmo.
Have you a Sea Bird or any other Cosmo toys?