2618. A suing and labouring clause is deemed to be supplementary to the contract of insurance; the insured may recover from the insurer any expenses properly incurred pursuant to the clause, notwithstanding that the insurer may have paid for a total loss, or that the property may have been warranted free from particular average, either wholly or under a certain percentage.
General average losses and contributions, salvage charges, and expenses incurred for the purpose of averting or diminishing any loss not covered by the contract are not recoverable under the suing and labouring clause.