The phrase "are offloaded from" is correct and usable in written English.
It can be used in contexts where something is being transferred or removed from one place to another, often in relation to cargo or data.
Example: "The goods are offloaded from the ship and transported to the warehouse."
Alternatives: "are unloaded from" or "are transferred from".
We had to get into the guts of the area where the bags are offloaded from the belly of the plane onto the belt.
Caching cooperation among cells are used to reduce the transmission latency due to short distance between the cells and mobile users, and redundant data streams are offloaded from the CPs at the same time, therefore heavy burdens on the backhaul channels are alleviated.
In comparison, the landed market value (which refers to the market value of goods on the day they are offloaded from a vessel) of shark fisheries around the globe is $630 million per year, but has been in decline over the past 10 to 15 years, the researchers said.
Thousands of plants have to be offloaded from trucks.
After Iraq, who really thinks democracy can be offloaded from a military plane and grafted easily on to a country that has known little except dictatorship and violence?
ConocoPhilips was granted a road permit in Idaho last month to haul four Korean-built oversized oil-processing units from Lewiston, Idaho, where they were offloaded from Columbia River barges, to the company's expanding refinery in Billings, Montana.
Makeshift is how I'd describe the feel of the "airport," as if a few boxy pre-fabricated units were offloaded from a truck a few decades ago and thrown together.
It's so large that no U.S. warplane is big enough to drop it: it has to be offloaded from the rear of a cargo plane, with the help of a parachute.
Whatever was offloaded from the ship has now seemingly been spirited off, and we're giving chase in a truck, which thunders onto railway tracks and down into the tube system, where enemies fire from a hurtling train.
These two facilities alone account for hundreds of trucks in Midtown every day, many of which were offloaded from trains in New Jersey only to take to the streets for the journey to Manhattan.
She said it disproved the evidence at the criminal trial of eyewitness Joshua Rathmell, who saw a black object being "offloaded" from a balcony of an apartment building opposite Hyde Park at the relevant time.
