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The sea mines are from Artmaster a company based in Stuttgart I got them off ebay where I see there are some available at the moment. Here is Artmaster's web page
http://www.das-kantoor.de/1.80.307.htmI tried to get some sea mines that Shapeways advertised but this fizzled out. Trying to locate and procure from them is timely and costly.
The Turkish "mine layer" vessel itself is an abused but lovely HBLS Steam tugboat early to mid 20thC.
http://www.hlbs.co.uk/product.php?id=758The Turks did indeed try to float sea mines down the Tigris. They also sank vessels to block the navigation. The inspiration for the Turk mine layer was, The Nusret. Nusret is a famous mine layer of the Ottoman Navy, which still exists.
The Arab Dhoa and Royal Navy Divers ( who were deployed in the campaign y o counter the Turks mines and block ships) Motor Launch are both models modified from the excellent range of boats from Barrage Miniatures. Great resin cast and very nice people to deal with.
http://www.barrageminiatures.com/31-boatsBarrage