冷れい凍とう船せん

れ

い

と

う

せ

ん

Meanings

1

refrigerator ship; reefer ship

A cargo ship equipped with refrigeration facilities for transporting perishable goods such as fruit, meat, or fish.

冷れい凍とう
冷凍 means 'freezing' or 'refrigeration' in general, while 冷凍船 specifically refers to a ship equipped for that purpose.
冷れい蔵ぞう船せん
冷蔵船 is a near-synonym also meaning 'refrigerated ship'; 冷凍船 may imply freezing capability, while 冷蔵船 often implies chilling/refrigeration.

Compound of 冷凍 (れいとう, 'freezing, refrigeration') and 船 (せん, 'ship, vessel').