Direction is key in getting to where you want to go. This is the reason why a map is important in navigation. Nowadays, it's GPS. How can you go wrong with that? However, the captain of the boat should know where he wants to go before setting sail. Setting off without a travel route is costly and filled with uncertainty especially with the crew you are travelling with. Unfortunately, crew members can only do the captain's bindings and go where ever path he wishes to take. Now, if the captain is not the owner of the boat, such an endeavor is a waste of money and resources. Unless, of course, if you are leading an expeditionary trip to parts unknown.
Basically, it would be like setting off in a rudderless boat. Ika nga nila, "Bahala na si Batman!"