The bare minimum amount of employees necessary to keep an office, business, service, etc., running at a basic level. We can't have a restaurant that is completely closed during the slow season, so we keep a skeleton crew on board to serve the few customers who decide to come in.The rigs will have a skeleton crew keeping them running until the company finishes handing over its business to the new owners.
A closely cropped haircut, usually for a male, as in The boys all think crew cuts are cooler in summer. This term presumably originated in the navy ( crew referring to a ship's crew), where such a haircut was mandatory. [c. 1940]