I've always loved ships, harbours, canals and similar industrial scenes for the way that they show up fascinating shapes, angles and colours and project, (for me at any rate), senses of character and provoke feelings of nostalgia or portent. Digital photography has allowed this amateur passion to find some expression.
This is a photo of the hang of the huge mainsail on Thames Barge "Henry". It's the way it has to hang. That's how it is, but it's a working "industrial" function.
Thames barges, by tradition, all have - MUST have - red brick coloured sails. Seeing a half dozen of them out at sea, drenched in sunlight and under full sail is a special and very specific sight that is unique in the whole world - but now gone except for very special occasions.
P.S. Cick on the photo to enlarge it. You will be rewarded with the details of the stitching and edging of the sail.