In Space Exploration what's a good way to make the jump to asteroid fields to start naquium production? Cargo rockets are unreliable traveling to asteroid fields, but my current space ships are also lacking in that regard. Without further tech it's hard to make a space ship capable of traveling out to deep space, but I need naquium to tech any further.

Current ship designs. The ones on the left are for low gravity travel only, they transport rocket probe data, water, and methane ice. The ship on the right is intended to be used for planet to planet transportation, but it's still untested. Neither can make the trip to a deep space asteroid field though, and the right ship is already taxing my tech limits.