Spot port prices are for delivery typically between 1 and 8 days from the price date.
Forward port prices cover the next 12 delivery months. The delivery date/month for a port product (e.g. Singapore VLSFO) is included on the webpage — typically next to the trade date within a table and/or in the page title.
IFO 380, IFO 180, VLSFO, ULSFO: Typical parcel sizes are 300-2000 metric tonnes
MDO, MGO 0.5% and LSMGO: Typical parcel sizes are 50-1000 metric tonnes.
LNG: Pricing is for parcel sizes of 250-1000 metric tonnes.