Marine Insurance Act, 1963
36. When breach of warranty excused
(1) Non- compliance with a warranty is excused when by reason of a change of circumstances, the warranty ceases to be applicable to the circumstances of the contract, or when compliance with the warranty is rendered unlawful by any subsequent law.
(2) Where a warranty is broken, the assured cannot avail himself of the defense that the breach has been remedied, and the warranty complied with, before loss.
(3) A breach of warranty may be waived by the insurer.