[kach22i]

Originally posted by Superman
This surprises me. If the water level ever changes, at all, then this structure would need to be pretty impressively strong. Generally, in an application like this, what I normally see is floating concrete structures. Concrete pontoons. Yes, concrete floats nicely.

I guess the float planks could ride up and down the piers with the tide.

..............from another forum.

http://www.boatdesign.net/forums/showthread.php?t=11052&page=37

I grew up not far from there. That's a US Navy weapons/ordnance loading pier in Middletown, NJ, at the southernmost point of New York Harbor. It's nearly 2.3 miles/3.5 km long out from shore, I guess to minimize collateral damage in case they have an "Oh, sh--" moment while loading ammo on the ships.............The ammo storage area itself is about 15 miles inland.