Once a carrier receives goods from a shipper based on a contract for the carriage of goods in a general ship (meaning a transportation contract intended for individual packages of goods; hereinafter the same applies in this Section), the carrier must load the goods onto the ship and stow them.
運送人は、個品運送契約（個々の運送品を目的とする運送契約をいう。以下この節において同じ。）に基づいて荷送人から運送品を受け取ったときは、その船積み及び積付けをしなければならない。
If a shipper neglects to deliver goods, the master may cause the ship to depart immediately. In this case, the shipper must pay the full amount of freight charges (if a carrier receives freight charges for other goods in place of those goods, the amount of such freight charges is deducted).
荷送人が運送品の引渡しを怠ったときは、船長は、直ちに発航することができる。この場合において、荷送人は、運送賃の全額（運送人がその運送品に代わる他の運送品について運送賃を得た場合にあっては、当該運送賃の額を控除した額）を支払わなければならない。
Read this with the articles around it
carrier
「運送人」
A person whose business is undertaking land, marine or air transportation.
Defined inArticle 569, paragraph (1), item (i)· applies throughout the law
contract for the carriage of goods in a general shipcorrected by this site
「個品運送契約」
A contract of carriage by sea whose object is individual items of goods, under which the carrier must load and stow the goods it receives from the shipper.
Defined inArticle 737, paragraph (1)· applies only in this section