You are the head of the legal department of Dubai Shipping SA and your employer requests you to provide an analysis in which you must:
(a) assess how salvage and towage services are differentiated, concentrating on the issues which differentiate the two services, and
(b) evaluate the meaning of any reasonable deviation when a bill of lading is governed by Art IV, rule 4 of the Hague/Visby Rules, answering in particular whether it adds anything to the deviations already justifiable under common law.
Each part of the required analysis should be of equal length, both having to be illustrated with case and statutory law where appropriate.