Today is the monthly club regatta. Your part is Tactitian. You are already downloading Tactimem to iphone. Make full use of Tactimem and bring victory to the team. Today ‘s regatta is an in – shore race of the upwind leeward 4 leg. The mark is set to the arbitrary position by the committee. The boat will sail and head for the race course. Up to the race course is upwind so your boat sails closed hold. Please take out Tactimem here. Then enter the direction of travel. It is COG preferred. If there is only a compass enter the heading. Enter the direction for each tacking and record the trend of the wind direction.The start time is in 15 minutes. The committee boat is anchored and the start line is set up. Let’s check the direction of the outlook of the start line. Look at the mark direction of the pin end from the star boat end. You saw 100 ° in hand compass. Enter direction using the keypad and select “Start Line / Pin”. The boat will sail closed-hold after sailing to the pin end along the start line. Please see the direction the boat is going forward. It is COG or heading heading. You saw 140 ° as COG on GPS equipment. On the keypad enter 140 and select “Upwind-Stb”. Then tack and sail at port tuck. After you check COG and enter 230 ° and “Upwind-Port”. Tactimem shows that the tacking angle is 90 ° and the average in the sailing direction is 185 °. Tap “Tacking angle: 90 °” here to fix the tacking angle. The boat will return to the start line and this time we will see the direction with the boat facing the wind position. You saw 180 ° at the hand compass. Please enter the value and select “wind direction”. Tactimem changes the wind direction by 5 ° to the right than when you sailed closed hold earlier, and the start line shows 10 ° bias to the starboard end.