the entitlement of salvage remuneration despite contract of sea towage

a tug which, according to towage contract, renders salvage services to tow, is not, principally, entitled to reward, although she has, practically, rescued the tow from danger. notwithstanding this, section 176 of iranian maritime act says: a tug has no right to remuneration for assistance to or salvage of the vessel she is towing or of the vessel cargo, except where she has rendered exceptional services which cannot be considered as rendered in fulfillment of the contract of towage. if the nature of services rendered by tug ,conform with the section, the voluntary character of acts is respected and contrary to opinions propounded, the entitlement of tug to remuneration is based neither on the implied term of towage contract nor on legal compensation due to salvors. moreover, during salvage operations, the towage contract is not, necessarily, suspended.