Online Seminars Now Available
June 23, 2022
Tides and Currents
For the safety of oneself, the boat’s crew and the boat itself, the boater had best be prepared to take tides and currents into consideration when planning a voyage of any length in tidal waters. Failure to do so can result in the vessel’s running aground or, just as embarrassing and damaging, snapping off a mast in a collision with a bridge or utility cable stretched across a tidal river. It is not possible to cover every detail of the subject of tides and currents within the constraints of this seminar, but it will certainly give the student a solid introduction to the subject.
Non-Members: $20 Members: $16
Register HERE
Tropical Weather
Many boaters like to spend all or part of their winters sailing in tropical waters, and no doubt wonder what sort of weather they might encounter. The meteorology behind winter weather in the Tropical Zone is very much different from that which we experience here in the mid-latitudes. This seminar gives provides a quick review of mid-latitude weather, and then explains the differences that we would find in the tropics, and why they are different.
Non-Members: $20 Members: $16
Register HERE
Celestial Navigation in a Nutshell
Before electronic navigation aids like GPS and electronic chartplotters came along, coastal sailors plotted fixes by using natural and man-made references, such as lighthouses, buoys, church steeples, radio/TV towers, and so on, that were plotted in their exact locations on paper navigation charts. They did this by taking quick-succession bearings on two or more of these objects, thus producing lines of position (LOPs) that crossed each other at some point. When these LOPs were plotted on the paper chart, the sailor could see the fix, indicating the boat’s position. This process is called getting a terrestrial fix. However, if the sailor is in the middle of an ocean, there are no lighthouses or church steeples. There is a solution however, and as the Friendly Giant used to say, “Look up … way up,” and there are all those heavenly bodies, “lighthouses in the sky.
Non-Members: $20 Members: $16
Register HERE
