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: USCG approves use of electronic charts
    From: Jorge Santos
    Date: 2016 Feb 11, 12:20 -0800


    Aboard a large commercial ship, relying solely on electronic charts and electronic devices in general, might be fine; given all the redundant systems from electrical sources to output devices. Plus a professional crew.

    In a small vessel:

    - with small screens there is always the need to zoom in and out; and hasards may just not show up at all at a given scale: see the reports on the Team Vestas crash in the last VOR; with paper charts the scale is quiet evident;

    - gps devices work fine most of the time but not always; once I even got coordinates with an error of 1/4 mi near shore;

    Therefore my rules of thumb when playing the role of skipper/navigator in a charter or friend's sailing boat are:

    - keep the chartplotter of the boat off;

    - hide those fancy paper charts from private editors;

    - use a tablet in the cockpit as the main navigation device, in a waterproof case, well secured in place, running only a tested navigation software after a clean restart, with the last updated electronic charts and, waypoints previously marked and double checked against official paper charts and reputable pilots (ports and anchorages for emergency landing, hasards, etc); in my case - iPad/Lifeproof case/RAM mounts/iNavx/Xtransverse charts;

    - use a fanless/solid hard drive computer at the chart table for general navigation work;

    - 1 spare tablet ready to replace the cockpit one, 1 hand compass, 1 sextant in a waterproof grab bag;

    - and yes, the official and updated paper charts, at the suitable scale(s) for the area of navigation on the saloon table.



    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