It can. One large LNG carrier can transport +100 million cubic meters of natural gas. If you mean LNG terminals, there’s not enough of them but the Polish one should become operational late this year. OK it wouldn’t be possible to supply all the gas imported to Europe using ships but that’s not the point, the point is to import it at a small scale and increase the volume if Russians start making problems. In the long term Russians can’t block export of their own resources, they have not much else to sell but in the short term they may shut it down and cause huge problems for European economy and that fact alone is keeping Europe in check. At the moment there’s a ban on export of US natural gas.
What would happen if a 777 loaded with explosives collided with one of those while it was in port?
Would the gas contribute to the force of the explosion(s)?
The EU alone imports over 420 billion cubic meters of natural gas each year. It would take 4200 trips to service them alone.