This model is a fully rigged WWII General Electric searchlight. The Power Plant, Power Cable and Search Light are in individual files in a neutral pose, suitable for import / referencing into other scenes.

The scene file that generated these images is provided with the models referenced into it. The wheels are setup to rotate automatically.

The objects are modeled as quad-poly subdivision surfaces. However, they do not make use of Maya's subdivisions. Instead, they use Mental Ray subdivision approximation nodes to tessellate them at render time.