A Iranian parliamentary committee has approved a bill requiring the government to design nuclear-powered merchant ships and provide them with nuclear fuel, an Iranian news agency reported Sunday.

The bill appears to be a symbolic gesture to bolster Tehran’s argument that it has a right to enrich uranium for peaceful purposes. The West suspects Iran’s nuclear program is aimed at developing weapons technology, a charge Tehran denies.

Nuclear-powered vessels other than warships are rare, and the International Atomic Energy Agency has said in the past that nuclear-powered merchant ships would be uneconomical.

Iran is seen to be far from a capability to build nuclear-powered ships. Iran says it is designing a nuclear submarine.