Seamanship_Secrets_185_Tips_-_Techniques_for_Better_Navigation-_Cruise_Planning-_and_Boat_Handling_Under_Power_or_Sail_(Re)_e..

250 seamanship secrets Also note the speed of the trend—rapid, slow, or steady. An hourly rise or fall of 1 millibar (0.03 inch) ...

weather and water wisdom 251 this your starting point. At 2200, the reading has fallen 3 mb below the datum line. Call this your ...

252 seamanship secrets Do we have enough time to make port or should we move farther off shore to gain sea room? You can make a ...

weather and water wisdom 253 A sample weather pattern log. In this example, diurnal variation is negligible. Th e cardinal direc ...

254 seamanship secrets HIGH-ALTITUDE CLOUDS The highest clouds appear to be solid white and are composed entirely of ice crystal ...

weather and water wisdom 255 Cloud identifi cation. Do your best to identify the cloud types you are seeing. Note in the 3-hour ...

256 seamanship secrets Q Puff y cumulus clouds that dot the sky signal fair weather. If the cumuli mass together and develop int ...

weather and water wisdom 257 European Coastal and High Seas Forecasts Coastal broadcasts are given by the Coastguard MRCC/MRSC s ...

258 seamanship secrets 127 degrees magnetic – 110 degrees = 017 degrees magnetic Apply variation to convert this answer to true ...

weather and water wisdom 259 Low Pressure Center Bears West (Northern Hemisphere) Wind signals Th e wind will be steady; no wind ...

260 seamanship secrets Line Squall Response for Inland or Restricted Waters Don foul-weather gear and life jackets. Close hatch ...

weather and water wisdom 261 Divide the number of seconds by 5, or Multiply the number of seconds by 0.2. You have timed the int ...

262 seamanship secrets Protection Systems and Grounding Tips Th e best lightning protection comes from forming a cone over the b ...

weather and water wisdom 263 a 10-second period gives a much smoother ride on both power and sailing vessels. If you are caught ...

264 seamanship secrets Average wave height = 3.6 feet as follows: SW= 6; 6 × 0.6 = 3.6 feet 10% of highest waves = 7.8 feet as f ...

weather and water wisdom 265 the swell breaks; this creates extremely hazardous conditions in inlets for small craft. For exampl ...

266 seamanship secrets divided crests meet each other on the island’s lee side, a cross swell develops. Many a mariner has spent ...

weather and water wisdom 267 Diffraction of a Swell Stay well clear of the area just behind the pointed ends of islands or break ...

268 seamanship secrets peaks and rush down the other side to the sea. They have local names—a williwaw in Alaska, a Santa Ana in ...

weather and water wisdom 269 “Your Call, Skipper” You’re the skipper or most knowledgeable crewmember in each of the following s ...