(a) Keep its insurable property adequately insured at all times by financially sound and reputable insurers; maintain such other insurance with financially sound and reputable insurers, to such extent and against such risks as is customary with companies in the same or similar businesses operating in the same or similar locations, including insurance with respect to Mortgaged Properties and the Vessels, Chartered Vessels and other properties material to the business of the Restricted Parties against such casualties and contingencies and of such types and in such amounts with such deductibles as is customary in the case of similar businesses operating in the same or similar locations, or as otherwise required by any Legal Requirements; provided , however , in addition to the requirements set forth above in this sentence, the Restricted Parties will at all times cause at least the Required Insurance to be maintained with respect to the Collateral Vessels.