Modern style overland maps require precise surveying, which requires precise instruments, which require precision machining. It also requires a lot of work, so you need the resources available and a justification for surveying everything you intend to map.

Marine maps likewise require precise instrumentation. The most basic level of navigation technology needed for anything more than a visual list of coastal features is dead rekoning and requires a compass to measure direction and ship log to measure speed. This is not very accurate and although the basic principle of a compass is simple, building a GOOD one is much more complicated. To measure latitude requires an inclinometer of some sort, like an Astrolabe or Sextant, which again is a simple concept which is difficult to do well and will require the same sort of precise machining as for surveying. Measuring longitude requires a marine chronometer, which is an early Industrial age development.

If people made it through with say, modern wristwatches, that would be a MASSIVE change in terms of navigation, at least for as long as the watches lasted. Developing a precise marine chronometer first may have played a part in British naval dominance so this is a BIG issue.