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    Silicon Sea Information
    From: Dan Hogan
    Date: 1998 May 18, 5:08 AM

    READ WITH FIXED PITCH FONT 7.5" x 11" .5' margins page setting.
    
    ***************Cut Here*************************
    
       BEAUFORT SCALE OF WIND FORCE
    
    ----------------------------------------------------------------------
    ------- No.    Speed    Description      Height of Sea       Deep Sea
    Criteria
           Knots*                    Meters   Feet**
    ----------------------------------------------------------------------
    ------- 0      less     Calm              _                  Sea
    mirror smooth
           than 1
    
    1      1-3      Light air         0.08     1/4       Small wavelet
    like
                                                         scales, no
                                                         crests.
    
    2      4-6      Light Breeze      0.15     1/2       Small wavelets
    still
                                                         short but more
                                                         pronounced.
                                                         Crests glassy and
                                                         do not break.
                                                         Foam is glassy.
    
    3      7-10     Gentle breeze     0.6       2        Large wavelets
    crests
                                                         begin to break.
                                                         Foam is glassy.
    
    4      11-16    Moderate breeze  1.0       3 1/2    Small waves
    becoming
                                                         longer; more
                                                         frequent white
                                                         horses.
    
    5      17-21    Fresh Breeze      1.8       6        Moderate waves,
    and
                                                         longer; many
                                                         white horses.
    
    6      22-27    Strong Breeze     2.9       9 1/2    Large waves begin
    to
                                                         form; white
                                                         crests more
                                                         extensive.
    
    7      28-33    Near Gale         4.1       13 1/2   Sea heaps up;
    white foam
                                                         blown in streaks.
    
    8      34-40    Gale              5.5       18       Moderately high
    waves of
                                                         greater length;
                                                         crests begin to
                                                         form spindrift.
    
    
    
                                                         Foam blown in
                                                         well marked
                                                         streaks.
    
    9     41-47    Strong Gale        7.0       23       High waves dense
    streaks
                                                         of foam. Crests
                                                         begin to roll
                                                         over.
    
    10    48-55    Storm              8.8       29       Very high waves
    with
                                                         long overhanging
                                                         crests.
    
                                                         Surface of the
                                                         sea becomes white
                                                         with great
                                                         patches of foam.
    
    
    
                                                             visibility
                                                         affected.
    
    11   56-63    Violent Storm       11.3      37       Exceptionally
    high
                                                         waves. Sea
                                                         completely
                                                         covered with
                                                         foam.
    
         64+      Hurricane                              The air is filled
         with
                                                         spray and
                                                         visibility
                                                         seriously
                                                         affected.
    _____________________________
    *  Measured at height of 10 meters (33 feet) above sea level.
    ** In the open sea remote from land.
    
    *****************Cut Here***************************
    Silicon Sea Glossary
    
    True Course(TC)-- The direction to travel, from a point of departure
    to a
                      destination/waypoint, plotted on a chart in relation
                      to                      true north ( of course
                      meridians of longitude run north).
    
    Magnetic Course(MC)-- The true course corrected for variation.
    
    Compass Course(CC)-- The magnetic course corrected for deviation.
    
    Compass Course Made Good(CCmg)-- The compass heading with corrections
    for
                                     variation, deviation and current have
                                     been  applied. Same as: COURSE TO
                                     STEER/COURSE
                                                STEERED, etc. Or whatever
                                     term your
                                                   calculator/program uses
                                     for the course
                                                    steered by the compass
                                     to a destination.
    
    Compass Bearing-- A bearing taken with the ships compass.
    
    Handbearing-- A bearing taken with a handheld compass.
    
    Speed(S)-- The speed of the boat through the water. Knotmeter reading,
    etc.
    
    Speed Made Good(SMG)-- Speed corrected for the effect of current.
    
    Set-- The direction to which the current is flowing.
    
    Drift-- The speed of the current in Knots.
    
    mi-- Nautical mile(s).
    
    Ded Reckoning Position(DR)-- The position as calculated by the formula
                                  Distance = Speed x Time or other DR
                                  method. Rumb-Line, Mercator Sailing, or
                                  Mid-Latitude.
    
    Estimated Position(EP)-- The DR corrected for the effect of current.
    ****************Cut Here******************
    
    
    Dan Hogan WA6PBY
    "Gacha" Catalina 27
    San Pedro, CA
    dhhogan{at}concentric.net
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