IRL Merchant Mariner's opinion & suggestions

So, my profession is in the maritime industry. In many ways this game scratches an itch no other game can when it comes to crude oil refining, transportation, & delivery. It's very close to realistic & I've noticed gaps in this area that the game currently is missing.

1. HFO (Heavy Fuel Oil) should be an allowable resource to refuel the Cargo & Combat ship. Currently it doesn't have an adequate use & majority of the worlds shipping is conducted utilizing this resource as fuel NOT DIESEL. Per USCG CFR's Cargo ships aren't allowed to utilize HFO within 200 Nautical miles of Americas water ways, this is when they swap to Marine Diesel!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Issue solved~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1.This gives an emergency resource to utilize in the event you run out of diesel.
2. It eats a resource that isn't commonly utilized other than boilers.
3. It's more efficient because it takes energy to refine