I would like to nominate the 'Boca Grande' transfer vessel in the Serpents Mouth between Trinidad and Venezuela.
Two cape size bulkies (us and them) tied up to each other. No tugs, a constant F5 wind and decent swell. We used every mooring line onboard and were the first Souter's ship not to part any lines when we were there. The Boca Grande doesn't ballast as she gets light... makes life interesting!
Also, any tanker lightering, especially if you are onboard the mother vessel, we get no time ashore!
Although I have heard a few stories about a certain bulk port in West Africa which cannot be named for fear of sending former visitors into a deep traumatic shock, oh ok then... Nouadhibou. There ;0)
<hr width=100% size=1>Well it's all for me grog, me jolly jolly grog!