Hey. How do you get less attrition with your navies (other than with explorers)? I'm finding it difficult to reach certain points in the map without destroying my ships. Is it any technology level, or idea group? I didn't see it.
There's a diplomatic tech (I think 22) which will remove increased attrition from open seas (otherwise you'll take attrition there even if inside your naval range). Other than that fleet basing rights and expanding strategically can also work wonders.