单项选择题 The fact that it has become impossible to procure a cargo（），as a rule，relieve the Charterer of liability.

单项选择题 The claim for dead freight being a claim for damages for breach of contract，the Shipowner is under a duty，where the Charterer fails to load a full and complete cargo，（）the damage by obtaining other cargo，provided he acts reasonably in so doing.

单项选择题 The Charterers to have the benefit of any return insurance premium receivable by the Owners from the Underwriters by reason of the Vessel being in port for a minimum period of 30 days provided the Vessel be on hire. This indicates that return insurance premium is to be reimbursed by the Owners to（）.