单项选择题 The basic shipping paper that forms an agreement between a shipowner and a charterer is a （）.

单项选择题 That the Shipowner has broken a condition precedent will（）the Charterer from the liability to provide a cargo.

单项选择题 Should it appear that war or blockade would prevent the vessel from safely reaching the port of destination and / or discharging the goods thereat，the Carrier（）.