Customs exemption amendments impose bond and integrated tax obligations on cable laying vessels while clarifying Schedule II import treatment. The amendment revises exemption entries to align lease/use imports with transactions in Schedule II of the CGST Act, inserts an exemption for ships/vessels used for cable laying or repair in Indian customs waters, and imposes conditions requiring a bond to secure payment of customs duty and integrated tax, an undertaking restricting home consumption and mandating use for the intended purpose, re-export of the vessel after service completion, and payment of integrated tax on breach; it also adds a specified entity to the eligible list.