How completely unprofessional. In order to make the best use of a fuel tanker as an improvised bomb, you need a drill, and a road flare, and some duct tape. Drill the hole, place the flare so the fire lit end is positioned correctly, tape in place. To detonate simply light the flare, place head firmly between legs, and kiss your........................ Placement of flare is intended to make use of fumes to create a fireball. Placement depends on make / model of tanker and the method used to drain it. Couple pounds of C4 or Comp B will make the process real easy.
I've always thought that a few divers with magnetic, shape charge mines could launch a simultaneous attack on several super tankers along the entire east coast, not to start fires, but to cause massive spills. The clean up would cost billions. There would be the added irony of our being hurt by our "thirst" for oil.