Supplies of a vital ship fuel are running low in northwest Europe as the fallout from Russia’s war in Ukraine continues to upend oil markets. Adding to the shortage is the planned seasonal maintenance happening at many European refineries. The cost of low-sulfur marine gasoil has surged in Antwerp in recent weeks. The price has risen even more quickly than Brent crude futures, indicating increased competition for the ship fuel. MGO is similar to diesel, the price of which has also soared since the war began.