Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: DR thread from Nov-Dec '04
    From: Bill B
    Date: 2005 Jan 20, 00:05 -0500

    > < If you are on a watercraft half way between,>
    > You're not disagreeing with me, you may have just failed to note that I
    > pointed out the fetch is 4000 miles--to the Califormia coastal sailor. The
    > fetch will be different at every different distance in the path.
    You bring up an interesting memory that I had put aside regarding fetch and
    waves (which would also affect current).  This summer (AKA the "summer that
    never was" on Lake Michigan) a lot of wind from the north.  Sailing out of
    Michigan City on the southern coast. 10-28 kt breezes out of the north for
    several days one extended weekend. 10 statute miles (love those Great Lakes
    charts) big but nicely formed wave trains and swells.  Within 2-3 miles of
    the dunes, mashed potatoes--huge piles of water.  Reading Trevor and
    thinking back, I was "set up."  What we saw was water bouncing of the
    southern shore in depths ranging from 40-200 feet.
    In this case, although fetch was several hundred miles and time was in days,
    because we were in near proximity to the shore (an perhaps factor in onshore
    breezes kicked up a notch by the the northerly breeze--exacerbated by
    shallow depths) it was a wild ride.
    While fetch related to waves/wind-induced current may indeed be measured in
    shore-to-ship distance for Doug on the high seas, in this case you make a
    strong point that what is leeward of the craft and proximity also plays a

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site