Moorings are provided by a number of different operators including navigation authorities, riparian landowners and other third parties. There are numerous different types of mooring arrangements which may be granted depending upon the particular circumstances. Is assignment possible? A licence is ordinarily a right in personam rather than a right in rem. As such, the grant is personal to the grantee, rather than being a right which is transferable. While it is important to consider the licence carefully in order to ascertain whether or not it can be assigned, it appears that many navigation authorities do not allow assignment, and view mooring licences as purely personal. However, as will be seen below, this need not always be the case. If the question concerns a grant by the navigation authority, the terms of the licence