This 3D model is native Maya 2014 with a mixture of Mental Ray and standard Maya shaders. There are various refits of this vessel but this model is based on the version of the Argus shown on the Royal Navy website:
The renders are using MR sun & sky but this set-up and the sea mesh isn't in the download.
*Please note the hull mesh renders well but isn't topologically clean because it was derived from many nurbs trims that wouldn't create an ordered poly mesh. You'll see from the renders it works well and it's been optimised as much as possible.