"Iran needs 50-60% enriched uranium to power commercial ships: MP" (Mehr News-Iran)

That would be a lot closer to what they would need for a bomb:

MP Abolqassem Jarareh has said that Iran needs highly enriched uranium in order to fuel the ships that it plans to equip with nuclear propulsion systems.

“This fuel should certainly be (purified to a level) higher than 25 percent, something about 50 to 60 percent,” Jarareh, who is a member of the Majlis Industries and Mines Committee, said in an interview with the Persian service of the Fars News Agency published on Friday.

The Majlis Industries and Mines Committee recently approved a plan which calls for Iranian oceangoing tankers and other commercial ships to be powered by nuclear fuel in order to eliminate their need to be refueled while on long voyages.

The parliament must endorse the plan before it can be implemented.

MP Rouhollah Abbaspour, the rapporteur of the Majlis Industries and Mines Committee, previously said that in response to the West’s anti-Iranian sanctions, the administration would be obligated to equip some vessels of the country’s shipping fleets with enhanced propulsion systems that would allow them to operate for long periods without needing to be refueled.