The cost to ship fuel has more than doubled since February.
Observers worry that the ship — a “pawn” in Yemen’s civil war — could spill its oil and affect fisheries and drinking water.
A string of recent oil tanker attacks is leading the industry to take extra precautions and raise shipping and insurance rates.
Stricter rules are likely south of the border too.
One strategy: Buying oil then storing it in tankers until prices go back up.