It took >300 years for transatlantic marine routes to reach acceptable levels of safety - and it really had to wait for modern navigation system + coal propulsi

It took >300 years for transatlantic marine routes to reach acceptable levels of safety - and it really had to wait for modern navigation system + coal propulsion + metal. I wonder if going to space will become routine before supraconduction and MHD drives are widespread. Like https://en.wikipedia.org/wiki/Yamato_1 https://en.wikipedia.org/wiki/Yamato_1 for air travel.