A method for determining the relative position between two or more objects
in a marine environment, including waterways, of which at least one
object can be maneuvered relative to one or more other objects. At least
one interrogator is arranged on one or more of the objects and sends a
radio wave signal to at least one transponder arranged on one or more of
the other objects. The novel method is the use of a FMCW radar in the
interrogator, the use of the transponders for including identity tags
into the signals to be reflected to the interrogator, and attitude
determination. A system for this determination is also described.