«In navigation» simply means the vessel must be in active operation. (cochranfirm.com)
Finally, unable to locate the cash or make someone talk, they release the team for active operations. (seligfilmnews.com)
Customer acknowledges that the Services are not designed or intended for use in high - risk activities including, without limiting the generality of the foregoing, in any direct or active operations of any equipment in any nuclear, aviation, mass transit, or medical applications, or in any other inherently dangerous operation. (myimprov.com)