This is a paid asset, but now you can download Container Ships (set 2) for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Container Ships (set 2) v1.0
This is a set of 3 container shipping vessels. The triangle counts for each model are
ship1 = 2,180 triangles
ship2 = 1,690 triangles
ship3 = 3,116 triangles
Each ship has efficient usage of texture space and uses tiling textures in certain areas to maximize detail without requiring excessively large texture maps.
Each ship comes with 2 diffuse textures (one of which has alpha channel for the railings and small details).
Each texture is 2048×2048.