Well I was a bit tired of painting straight lines of old architecture which I found quite tedious. I was also in mood for some light work.Found this subject right in front of me while flying for offshore rigs. These oil rigs are massive structures. Some of them are self contained structures which can house 200 workers and in addition the machinery etc. Helicopters land on their helidecks. In fact they are an engineering marvel. Many of these rigs can be moved from one location to another. And to move them these small tug boats are used. The first time I saw them I could not believe it. Three or four of them together can shift these huge structures. Moral of the story.... 'United we stand, divided we fall.'