Fishing vessels, namely fishing vessels, are collectively referred to as vessels engaged in fish fishing, processing and transportation. They are vessels engaged in fishing and collecting aquatic animals and plants, and also include some auxiliary vessels engaged in modern fishing production, such as vessels engaged in aquatic product processing, transportation, aquaculture, resource survey, fishery guidance and training, and carrying out fishery administration tasks.

In order to ensure the quality of catches, keeping fresh is one of the important functions of fishing boats. The preservation methods on board generally include ice storage, cold sea water preservation, salt storage, micro-freezing, freezing, etc.