英语翻译the seller shall,30 days before the shipment date specif

英语翻译
the seller shall,30 days before the shipment date specified in the contract,advise the buyer by___of the contract number,commodity,quantity,amount,packages,gross weight,measurement,and the date of shipment in order that the buyer can charter a vessel/book shipping space.in the event of the seller's failure to effect loading when the vessel arrives duly a the loading port,all expenses including dead freight and/or demurrage charges thus incurred shall be for the seller's account.