So very true. Unless you are accustomed to navigating on waters without reefs and obstructions. There are many lakes and coastal communities where if you are just careful adjacent to the shore you are fine. In fact in most cases in the BVI you will be fine once you maneuver away from shore. One place even large crewed yachts have found themselves in trouble would be the area north of Beef Island. There are several spots where the marks are of little value without a proper chart and situational awareness. A wrinkled chart is great. A chart in a tube somewhere on the boat not so much.