Dockyard assets low poly models very optimized assets. It is very useful for mobile games. I already created a sample scene with proper lightmapping.

4-Container sets, 8-single Containers with 4 different type of colors. 2-wooden boxes, 2-drums, 2-storage pallet.
10- 1k textures.

Every asset has a prefab set up for you. You can create your own Dockyard area using this assets package.