Actually it’ll probably be easier to figure out how to transmit stuff, a ship, in a way that cheats the light speed problem first. Transmitting stuff is almost always easier than transmitting nothing, when there’s stuff we can include measuring devices to figure out the thing we’re transmitting in. That’s why submarines came before sonar, sonar seems easier, but you have to understand how things work underwater first, and the best way to find that out is to be underwater.
What is this 'stuff' of which you speak?