As bitcoin is quite traceable I don't see how this works if you're trying to avoid sanctions. For Iran it probably doesn't matter but for the vessel owners it probably does.
Business idea - Iran Bitcoin fee intermediary. Realistically the CIA will handle this for US companies and maybe allies until they figure something out.
Agreed, but I wonder it if matters in practice. It's not like one can boycott bitcoins by serial number or something, is it?
One of Iran's demand for a peace agreement is the removal of all sanctions.
the issue is the US' ability to freeze USD bank accounts on its soil or pressuring other banks to do the same
Yes, from sanctions perspective, the vessel owners seem to have more exposure than Iran -- as crazy as it sounds on the surface.