Photos

When I tool the shot, the Costa Magica was in the harbour of Genoa. This boat, of which we see here only a detail, is like a floating town. It is unbeleivly huge.
The repetivite patterns are the purpose of the picture. I am much emdebted to Avigur11 for the idea.

Tech : Using the Gim:
-perspective tool to have the horizontal lines horizontal
-resize for trekearth
-duplicate layers
-unsharp mask with very strong effect on top layer
-choice of the correct opacity of the top layer to have the best effect of the unsharp mask
-flatten the two layers
-save to file ;)

REPOST: After reading your advices, I carefully considered croping on the left and/or on the right. Finally croping the right won my preference (thanks for the advice avigur11).