I've seen more than I can count.
I worked a few as a deck Seaman; it can be unnerving seeing the tanker get closer and closer while hooked up.
Right. Can you imagine what it must have been like for the crews of those ships (both large and small) as they sailed into Typhoon Cobra in the fall of 1944 near the Philippines and were trying to top off the Little Boys...
That must have been terrifying trying to accomplish that replenishment, but the real terror occurred a short while later in the heart of that typhoon where nearly 800 men lost their lives.