We had been on cruises before and had learnt that they are usually planned to leave a harbour at sunset.
The previous cruise we had been on, the weather was inclement. That time we were sailing from Sydney Harbour, one of the most beautiful harbours in the world. As we live in Sydney suburbia, it is fairly easy to get sunset pics if we choose, so that was no big deal.
Yokohama was a different story though. This would most likely be a once in a lifetime event.
It turned out to be a stunning view.