The Cruising Log makes record keeping your cruising track Simple. Made Simple for Cruisers Logging your GPS latitude, longitude, heading and speed as compared to your compass and speed through water instrument is a good practice. If you lose your GPS you compass and instruments can help you continue on the best course. The log will help you get started with an accurate dead reckoning on your charts with set and drift already factored in. Making entries in the log hourly helps keep the crew awake on those long nighttime passages. Thinking about a Captains License Be sure to log your Cruising time as a record of your vessel experience. The Cruising Log also provides an excellent record of where you have been and when for your post cruising life to share with the family back home.