Free In and Out (FIO) is a term that is used in international ocean freight shipping. It indicates that the carrier is not responsible for the cost of loading and unloading goods onto or from the vessel.

FIO is typically used when the shipper and consignee (the sender and recipient of the goods) have agreed that they will be responsible for the cost of loading and unloading the goods onto or from the vessel.
This is in contrast to Free In (FI), where the shipper is responsible for the cost of loading the goods onto the vessel,
or Free Out (FO), where the consignee is responsible for the cost of unloading the goods from the vessel.

In international shipping, the term “free” is used to mean “not included.” Therefore, when a shipment is marked as FIO, it indicates that the cost of loading and unloading the goods onto or from the vessel is not included in the overall shipping costs. The shipper and consignee will be responsible for paying these costs separately.