Enables or disables tracks. Tracking is on upon startup by default. Right click on track brings up a dialog box with. The tracking function does not use course and speed. If you decrease the logging frequency you will get "straighter" lines. Make sure your GPS is set to produce at least three digits of resolution. Change color scheme. Has the following selections. Link to this Document and 'About'. On the first of three tabs you will find the version number 1.
The middle tab shows the names and email addresses of the authors of this work and the third tab displays the GNU General Public. This document describes the conditions under which this application is licensed to you, the user. Chart Title Block. The outline of the installed ENC chart shows as a green square. This is a judgment call, and is very rarely seen, only with very old BSB V1 charts. The Big Red X Top right of screen.
Hit this button or the one above it to shut down OpenCPN. Navigating with OpenCPN. Load Your Charts. Open the Tool Box and choose the tab marked "Charts". Use the top window pane to locate and highlight the folde r directories containing your charts.
When you have a chart directory highlighted, chose "Add Selection". OpenCPN will search that folder directory and all sub folders directories. The f older directory you selected will then appear in the bottom pane of the window and be added to the OpenCPN chart database.
Repeat this for all the chart folder directories you wish OpenCPN to be able to display. When you have finished selecting and adding chart folder directories , choose "OK". A window with a progress bar will open showing that OpenCPN is recognizing your selections. There is no need to make a separate folder directories for OpenCPN charts. Using Routes. Right Click on the Waypoint of an inactive route gives you a dialog box with the following.
Right Click on the route gives you a dialog box with the following. Select 'Activate Route'. You should get a box of. The go to Waypoint will be and blinking. The data in the window will change to data of " This Leg " or " Route ". Right click on any active route waypoint gets this dialog box.
Right click on any active leg of any route gets a dialog box. Load file. The main purpose here is to ensure that the largest number of GRIB file types and sources can be supported, and to start the inevitable discussion surrounding the UI and display rendering.
This Beta decodes and displays wind barbs and pressure isobars at sea level. The code is based on the zyGrib project sources.
Thanks manimaul! Select GRIB icon. In the file tree, navigate to a GRIB file of interest, and drill down to the forecast date you wish displayed. Comments on UI and display are welcome.
GRIBs on opencpn are intended to be a convenience for passage planning. Other programs will be better choices for analysis of oddball GRIB data models and slick graphics.
TOP Hot Keys. Arrow Keys, Moves the chart view. F4 Starts the measure tool. Escape : Stops it. F5 Toggle Screen Brightness. Selects charts on the Status Bar right to left. Selects charts on the Status Bar left to right. F11 Opens Grib Dialog. Alpha listing of Hot Keys. Grib Dialog F Measure tool. Escape : stops it F4. Moves the chart view Arrow Keys. What are all those 'U' things all over my chart? This is a meta-object describing the quality of data shown.
Thus, the 'U'. What's going on? Chances are the chart file is corrupted. Note the name and number of the suspect chart and replace it with a fresh download. Some unzip utilities for Linux are problematic when opening ECN's. If there are many corrupt charts in your download, try using a different unzip utility. Raster charts display bearings and headings as straight, measurable lines on the chart.
For typical coastal navigation, errors which occur using rhumb line instead of great circle calculations are small for the distances usually covered by one chart. Great circle navigation is more useful when one wants to travel the minimum possible distance between two widely spaced points on the globe. I cannot personally imagine using one chart for one electronically navigated leg across an entire ocean. However, if I crossed an ocean with OpenCPN , I would lay out a route with great circle points manually plotted every couple of degrees, and engage the autopilot.
Maybe the weather would cooperate This item is only visible in the right click-menu if the GPS isn't connected. Navigate to here Creates an instant active route from own boat to the position clicked.
More about routes: Marks and Routes Center View Activates a small dialog where latitude and longitude can be entered. Pressing "OK" centers the display on this position, keeping the same scale. If a position has been copied, and is in your copy buffer, it will be displayed as default values. OpenCPN accepts a wide variety of position formats.
The values entered is kept during a session, but goes when restarting OpenCPN. Clicking this entry changes the display to "North Up Mode. Read more on the AIS page. Looking at the right click menu for vector charts, to the right above,we can see these additional entries.
Object Query Every point on a vector-chart has certain attributes, or information. This can vary from just the depth in mid ocean to much more. Double clicking is an alternative to display the object query dialog. Here is an example from a lateral buoy in the entrance channel to a medium sized port. The scrollbar on the right side of the dialog, reveals that more info is available by scrolling down. Much more about this on the Vector Charts page.
CM93 Offset Dialog.. Apply corrections to CM93 chart cells through this dialog. Read more on the CM93 Offsets page inthe Advanced section of this manual. The basic quilted charts right-click menus, for raster charts and vector charts The only new item in the quilted menus is Hide this chart.
The chart becomes excluded from the quilt. To show the chart again, find it in the chart bar, now marked with a red " X ", right click and press "Show this Chart".
Zooming These buttons allow you to zoom in and out on the chart currently being displayed. Ctrl - for fine scale zooming out. Overzooming Overzooming If you zoom in enough there will appear a warning "OverZoom" in the upper left part of the chart area. This means that you have zoomed in way to far, and is using the chart at a scale that was never intended, and that is not supported by the original survey. No new information will be seen, and the situation is potentially dangerous as it could give the impression of increased distance between dangers.
On a raster-chart pixelation will be seen, but on a vector chart it is not so obvious when you have over zoomed. This is where the warning is useful. Your first action when the warning appears should be to zoom out at least one snap. Charts are generally based on surveys in twice the scale of the released chart, so when zooming in beyond a factor of 2, there is no support, increased details etc, in the underlying survey. OpenCPN allows quite a bit of over-zooming by default, but it is also possible to change this by editing a line in the opecpn.
A stricter recommendation based on how charts are compiled, and their de facto accuracy, would limit this to a factor 2. The Chart bar below consisting of 12 segments shows a quilt of two active charts. Five charts in the quilt are hidden, due to small scale. CM93 is in it's place, to the right. Four charts of larger scale than the present view are available. The largest scale chart is a Transverse Mercator chart. Limitation The Chart Bar handles a maximum of charts. The largest scale charts will be dropped first if more than chart are available on a position.
It is unlikely that this will be much of a limitation, but the possibility certainly exists if a lot of info charts, pilot charts and weather charts etc, are loaded. The symptom will be that large scale charts becomes impossible to display. Scaling Charts These buttons will allow you to change the scale of chart you are using, unless only CM93 charts are loaded, in which case these buttons has no effect, and are grayed out.
The scale of the displayed chart. Chart Quilting Chart quilting is a way to display parts of several charts together on the screen, redrawn to the same scale. Limitation Mercator charts, Transverse Mercator charts and Polyconic chart are quilted separately and don't mix. The transition from one form of quilting to the other is seamless.
The background world chart can appear in Tmerc and Polyconic quilt in areas where there is no other chart coverage. By quilting, any information available in the white border around a chart, will be hidden.
To see this information hit "F9" to temporarily get into single mode display. Tick he box. Once quilting is on in the Toolbox, F9 becomes a toggle switch to temporarily get into single mode display. Zooming in, automatically brings up larger scale charts, if available.
Panning reveals a continuous quilt of the available charts. If you started with a raster chart, only raster-charts, and perhaps CM93, will be in the quilt. Make sure you are familiar with the Status Bar as this will help you interpret all available information. More details What is the use of this feature?
In single chart mode, getting near the edge of the chart there is no information outside the chart. Y ou manually have to change to the next chart, by selecting one of the charts in the chart bar. Displaying charts OpenCPN has two modes of displaying charts, single chart mode and quilting mode. Single Chart Mode only shows one chart at a time, and a switch to other charts must be done by clicking another chart in the Chart Bar. All printed general chart information, outside the chart proper, can easily be read.
For CM93 the outline of individual charts can bee seen only if quilting is disabled. Full Screen Quilting. By default all visible charts of an appropriate scale are used in the quilt. With this box checked only charts that overlap the center of the screen are used in the quilt.
Checking this box is easier on the system and may give a performance boost in certain circumstances. Is Chart quilting on? There are some visual indications on screen to confirm if quilting is on or off. The colored rectangles in the status bar have rounded corners and the white borders of the charts are invisible when quilting is on. If you have the status bar visible at he bottom of the screen, a value in brackets after the scale, to the far right, is only shown in single mode.
The value within the brackets is the zoom factor. When hovering with the mouse pointer over a inactive raster chart button in single chart mode, a thumbnail of the chart is displayed in the upper left corner of the screen. At the same time an information box pops up above the button with details about the chart. This changes with quilting, as the thumbnails are replaced with a transparent reddish high-lighting of the charts that is a part of the present quilt or has a larger scale than the reference chart in the quilt.
This means that if Mercator charts are quilted the Transverse Mercator Charts will not be highlighted, and vice versa. The exception to the last rule is CM93 charts. When an area is only covered by CM93 charts, indicated by a long yellow chart button in the status bar, and in quilting mode, no info-box is displayed and no reddish highlighting is taking place. When CM93 quilting is off, the outline of the individual cells are outlined in magenta. More than one chart can be displayed and active at the same time, on the picture above, for example there are two pale blue buttons, as there are two raster-charts in this quilt.
In single mode only one chart button is highlighted at a time. Depth units that is normally shown in the upper right corner of the display, if activated in the toolbox, is only displayed in quilting mode if all participating charts uses the same unit.
Zoom level, normally displayed on the far right on the Status bar, is not present in quilting. Many of these features are illustrated in this screen-dump. This is a quilt consisting of three raster charts, two that are actually displayed and one smaller scale chart that is hidden behind the larger scaled charts of St Croix. This is the button for the not displayed chart in the quilt.
The mouse pointer is over the middle raster chart and the chart information box is shown, together with the red highlighting of the chart on the screen. If the chart info box contains much less info than above, just click the button to display the chart, then go back and hover with the cursor over the chart button again. The full info will now be available.
No depth unit is shown in the quilt as the left chart is in Feet and the right in Fathoms and parts thereof. Notice the lack of zoom level in the status bar, a quilt , by definition, consists of several different zoom levels. Which charts are quilted? There are several rules built into OpenCPN governing exactly how different charts reacts to the quilting mode.
Raster charts and Vector charts are quilted separately and don't mix together. You can quilt either raster charts or vector charts, but not both at the same time. The exception to this rule is that CM93 ver2 charts, if available, are shown if no other Mercator chart cover exists for a displayed area, for both raster- and vector- chart quilting. CM93 chart also kicks in if available , if the view is so far zoomed out that the rightmost smallest scale raster chart is too small to be useful.
Then, when you zoom in again, it tries to return to the raster chart that caused the auto-shift to cm If that chart is not available, it makes best effort to find a useful small scale raster chart.
Transverse Mercator Charts, which are all raster charts, are strictly quilted on their own. In this case, the background map is visible where there is no coverage. Polyconic Charts, which are all raster charts as well, are also strictly quilted on their own. The background world map is visible where ther is no other chart coverage. CM93 ver2 charts can be quilted separately. Mercator Charts are always quilted in quilting mode but don't quilt together with Transverse Mercator charts or Polyconic charts.
Polyconic Charts , are quilted separately, and don't mix with Mercator or Transverse Mercator Charts Skewed Charts are allowed in the quilt as long as they don't deviate more than 5 degrees from North Up. User control. Users can control if an individual chart, is allowed in the quilt or not. Right clicking on any chart in a quilt and clicking "Remove this chart from quilt" on the pop up menu, removes the chart from the quilt. The chart button in the Status bar changes to.
To activate the chart again right click this button an then click "Ad this chart to quilt" Controlling the scale of the quilt view.
The "quilt reference chart" is the left-most, largest scale chart, highlighted in the chart bar. This is the left of the two pale blue chart buttons above.
Click the next chart blue button "one-to-the-right" of the of the current reference chart. The reference scale of the quilt will be decreased, but the viewpoint will not change. The same logic applies if clicking a chart-to-the-left of the present reference chart, except that the scale of the quilt will increase.
OpenCPNs handles almost all of these cases. The picture above is from S:t Croix in the Caribbean. The gray rectangle above is a "hole" in a chart, where a smaller scale chart with coverage exists. The "hole" is due to the fact that this area wasn't surveyed to the scale of the chart. Chart Groups Chart Groups solves the following problem: You may have many charts loaded in your active database. Some of them have overlapping coverage at the same scale, so that when quilted the logic does not know which of potentially several Another example: Pilot charts as one Group, normal navigation charts as another Group, makes it possible to quickly switch between them.
The Chart Group function allows us to define multiple Groups, with different chart directories in each group. The Group desired for viewing may be selected quickly without adding or deleting charts from the Active database. The top pane contains you installed "Active" chart directories. The bottom pane allows you to create, edit, and delete Groups.
Note that there is always an "All Charts" group. This Group is not editable. New Groups which you create may have chart directories or individual charts added to them by selecting the item in the top pane and touching the "Add" button. You may also remove individual charts or directories from Groups by selecting the desired item in the bottom pane, and touch "Remove Chart".
Please note that "removing" an item from the Group does not remove it from your "Available" set of charts. The item is simply made unavailable when the Group is in use. Using your Groups In this illustration the navigator generally uses the US charts, when available. Coming into Baia do Porto Santo a detailed chart would be great, but no such US chart is available on board. A switch to the UK chart group solves the problem. Select the Group you want to use, by a right-click context menu item called "Chart Groups".
As you switch Groups the logic tries to select a chart and scale that closely matches the situation present before the switch. As you may understand, sometimes the fit is not reasonable, so the resulting view may be surprising. Finally, if you have no Groups defined, as in the default installation, all installed charts are always available. Above we have 5 instances loaded in various chart groups. The view is of "All Active Charts".
OpenCP also supports multiple partial CM93 datasets. The instances are loaded, from left to right, in the order of the chart groups.
In this situation, only the leftmost instance of CM93, that is not excluded from the quilt, will be displayed. Above, it is the instance represented by the yellow rectangle.
Vector Charts First , one very important setting for vector charts is handled directly from the main toolbar. Base Displays general information, including coastline, safety-contour, isolated danger, buoy, beacon traffic separation zone, etc.
From the IMO definitions: Display Base means the level of SENC information which cannot be removed from the display, consisting of information which is required at all times in all geographic areas and all circumstances. It is not intended to be sufficient for safe navigation. Standard Everything in "Base" and aids to navigation, fairways, channel limits, restricted navigation zones, restricted areas, etc..
Other Everything in "Standard" and more. This level could be described as "all essentials". This is a good choice for actual, underway, navigation, avoiding the possible risks involved in "Mariners Standard". See more below. Mariners Standard Users can use the filter tick box to set exactly what he or she wants displayed. A large set of filters, about , can be employed. They are all to the IHO S57 standard, but has been given a label that is easy to understand. It is for example possible to not display items in the Base category.
These Hot Keys all works in "Mariners standard". T Texts. The visible texts are still affected by the settings in the Vector Charts settings tab. L Lights. Lighthouses as well as buoys etc are all affected. S Soundings. A Anchoring. This will affect information needed when anchoring.
Anchorages and anchorage areas. Submarine cables and pipelines. Type of bottom. If in doubt, switch to " Other ", or use the "Select All" button. Vector Palette It's possible to change the whole look of a vectorchart. One example below Detailed information is available in Vector Palette Practical usage A general recommendation would be to use "Mariners Standard" and to "Select All", to start with, and then switch of certain features as required. As an example let's look at passing through the British gas fields in the SW North Sea This is not easy, so we want to get rid of all those red and yellow circles.
Right click on one of the platforms, square with a dot. Click "Object Query", and then one of the "Light" lines in the left column. Find "Light" in the Mariners Standard list of available filters, and untick it. Press the "Apply" button! Much better! In this particular case, there is a shortcut. Depth Soundings turns the measured depths on and of. Other settings also affects when soundings are displayed, for example "Reduced Detail at Small Scale".
The dark black numbers are not soundings. Instead they refer to heights of nearby islets or cays. On official paper charts the soundings are printed in italics. The bold number 20 refers to the land height of the unnamed cay SW of the number. Chart Information Objects earlier called "Meta Objects", relates to information about the chart itself. With this switch on, an object query reveals such information as the buoyage system for the area, the quality of the survey, the latest NTM update and sources for the chart.
Important Text Only displays only a bare minimum of text essential for navigation, such as course and bearing in a leading line range and bridge clearances. Reduced Detail at Small Scale makes sure that a minimum scale is required before certain objects are shown. If this box is not ticked , everything is always shown, leading to very cluttered view at small scale zoomed out. Checking this displays a label with a text describing the marker or lighthouse's characteristics.
Extended Light Sectors It is often difficult on a vector chart to see exactly what the light-sectors are supposed to do. De-Cluttered Text Even when using "Reduced Detail at Small Scale", there are cases when text labels overlaps or overwrites other labels and creates a cluttered impression.
Ticking this box clears up this mess. To see all the labels, increase the scale for the area. For Lights with many sectors, the text label for each sector overwrite each-other. With this box ticked only the first sector label is displayed. For full information regarding sector lights, do an object query.
Chart display style Points Paper chart draw the markers and lights just like the printed paper chart, while simplified uses icons to represent the same. Some like the one and some the other, a matter of taste. Paper Chart mode closely follows the IHO standard standard in this area. This mode is currently more developed than the simplified mode, as it has a higher priority in the development effort. Boundaries Plain normally just uses a dashed line, while the Symbolized version also uses triangles pointing into the area.
Colors Depth on the chart can be displayed with either 2 or 4 colors. This setting is closely related to the "Depths Settings". With 2 colors, and using a relatively large scale, areas with depth less than "Safety Depth" is blue, the rest is white. With 4 colors, there are different colors for areas less than "Shallow Depth", areas between "Shallow Depth" and "Safety Depth", areas between "Safety Depth" and "Deep Depth" and finally for areas deeper than "Deep Depth".
CM93 Detail Level d The CM93 charts slider control that allows the user to adjust the screen complexity to suit the actual situation as well as the available processor capability. Normal settings depend on a combination of personal preferences and present usage of map. To see more details, the "CM93 Detail Level" slider, can be set to a higher positive number or for navigation in shipping lanes to a negative numbers.
Typical zoom level 5 is good for fishing when as much details are possible is of interest. Positive values give more detail, but at a cost: a. It simply takes longer to render larger scale charts covering more screen real estate.
There will be more instances of gray NODATA areas surrounding the larger scale charts as you zoom out, unless quilting is activated.
It can become dramatically slower if high detail is specified, and chart outlines are requested. In this case, the program has to read a lot more cells to get their outlines. Conversely, negative values give less detail. Zooms are faster. The slider can also be activated through the "d" hotkey, and displayed directly on the screen. Depth Settings These settings are very important as they affect how the different depths are colored.
They can help you identify a deep channel for example, or they can, in the worst case scenario, prevent you from being aware of a shallow area. There is no setting that fits all circumstances. For example a Sea-mount with a depth of 20m in the middle of an ocean should be regarded as "shallow" and be avoided, while 20 m depth in a harbor approach in protected water, probably is safe.
The Depth Settings controls the coloring of the water as a function of depth. By setting the Safety and Deep water right you will have a visible border to show when to take care about shallow water. The charts contains depth area features according to fixed depth cutoff zones, usually 5, 10, and 20 meters.
Intermediate values are not available in the database,if you select a value between those available, OpenCPN chooses the next higher value available for display of color. The charts are inconsistent in this area, depending on the country issuing the original charts. For example in UK and the Netherlands the depth contours in CM93 are 2, 5 and 10 meter while in Sweden they are 3, 6 and 10 meter!
Find out these cut off depth for your area and set the "Depth Settings" with this knowledge together with your preferences and activity. Note that Shallow,Safety and Deep Depths are always in meters, even if soundings are chosen to be displayed in another unit. With all the reservations above, the general case for 4 colors, will be described. Shallow Depth will color all water areas with water depths shallower than the set depth to a dark blue color. Soundings are in black. Safety Depth water deeper that Shallow but shallower that this depth will have a paler blue color.
The Shallow Depth contour clearly marked with dark gray borderline. Soundings less than this depth are in black, while soundings greater than this value are gray. The Safety Depth contour is clearly marked with black borderline. Water deeper than Deep Depth is displayed in white. Finally a word about drying heights , displayed in green. There is no detailed information available for the value of the drying heights, neither in CM93 ver2 nor in many S57 charts, currently available for OpenCPN.
This adds very little, as it really only gives the information that the drying height is less than DRVAL1 in an area of unspecified size. Raster charts seems to be the only alternative for navigation in shallow areas with a large tide. Hopefuly this will change. A set of new charts released in april , by the Dutch Authorities, sets a standard for others to follow in this regard. Compared to CM When is safe to pass across Bramble Bank?
The CM93 vectorchart gives us no information whatsoever, neither on the chart, nor in the Object Query dialog. While a raster chart tells us that we need a Hight of Tide that is 1. Heights of islands etc. Is Balls Pyramid a high Island, that the name implies, or is it named with the same sarcastic humor as "Greenland"? CM93 can't tell.
Pictures of charts, can be converted, and used. Not supported formats that can be converted. Other formats that are not supported. S63 Encrypted ENC charts are not supported.
This is the format for the majority of newly produced vector charts from many national hydrographic offices. S63 charts are exactly the same as S57 except the they are encrypted to keep them from being illegally distributed. Chart Sources High Resolution Background Map A more detailed version of the built in background map is available here. Right click and use "Save Link As", or similar. Just clicking shows you the actual file as a text file more about that advanced subject here: imgkap.
Don't use these charts for navigation. Save the charts in a "directory", also called a "folder". For those interested in U. Links to a wide selection of ENC's for U. Argentina publishes free raster charts RNC for a large part of their coast: Argentinian Charts Brazil publishes free raster charts RNC for their whole coast and new charts for inland waters are published regularly. There is also coverage for part of Antarctica. Here is a direct link to the download page: Brazilean Charts.
The motivation for releasing these charts is well worth reading. Colombia and Australia publish sample S57 single charts. New Zealand publishes high quality tiff pictures of almost all their charts. These are all converted to charts, and available for OpenCPN here. This project relies on mariners to survey their local waters and upload their data using the OpenStreetMap database and editing tools.
This project is still in its infancy, so only a few areas have been mapped to any extent. For the maps, go to: map. These charts are available in many formats, including BSB3. A nominal sum is charged for the charts, to support this impressive effort by unqualified enthusiasts. Windows only. Windows users have access to world wide chart-coverage through the "BSB4" and the "nv-charts" plugins. This coverage includes Europe. UK, for example, is covered by both BA and Imray charts. A simple Internet search will reveal all necessary information.
Auto Follow and Display Orientation Clicking the Auto Follow button will center the chart directly on your vessel's current location. This is a toggle button that is slightly larger and greyer when on. If the the gps is working own ship is red otherwise the icon is gray. If zoomed out to a scal that is smaller than More about he OwnShip icon is available in Marks and Routes. The default own ship icon can be replaced by putting a file "ownship.
More about this shared directory here: Marks and Routes The Auto Follow button useful for two different situations: When you have panned the map away from your current location and want to quickly move back to your vessel. When underway, this will keep the display on the chart around your vessel, with the boat at the center of the chart.
Panning the chart will disable Auto Follow mode. Simply click again to turn Auto Follow mode back on. The display can be oriented three different ways, normally it is North Up but Course Up is an alternative. The easiest way to change between these two modes is through the "Right Click" menu.
One situation where course up might be considered is when navigating a river or a canal. The third orientation is when skew charts are displayed, they are simply shown as " Chart Up ", but an optional setting exist to show them as "North Up". In the picture below the Course Up is active. COG is 41Deg. Notice how all text on the vector chart, is aligned correctly.
This only works in OpenGL mode. The red arrow, in the upper right corner, is always pointing North. If an electronic compass is available in the NMEA stream the own ship icon will be orientated according to this heading. The difference can be seen on the chart if there is a cross current, for example. This icon blue color to the far right in the ToolBar indicates that the display is in North Up mode. The red version of the icon indicates Course Up mode.
Just below this option, the update period for course up, can be set. This comes in handy, for example, to perevent the display jerking around in a chop. Note that both the red and the blue arrows are always pointing North.
Look Ahead! Your own boat will no longer be in the center of the screen. Instead it will be located away from the center, in the opposite direction to your present gps course COG. Don't always Look Ahead! If you are at anchor, swinging on the hook produces random courses and low speeds. If Look Ahead is on in this situation the chart rendering will constantly be redrawn, with the boat in all possible lookahead positions as the course changes.
Show skewed raster charts as North-up. Skewed charts are normally showed "chart up", as intended by design. If ticking this box, these charts are shown North-Up. In both cases, activating course up, works as expected, the difference is when course up is n ot on. Tides and Currents Notes Tide and Current predictions are not available for all areas.
Multiple tidal files can be used at the same time. More about this further down this page. As with all predictions, the displayed values are calculated using mathematical models and actual tides and currents will vary Enable Tides and Currents Display Click the toolbar button to see tide stations.
Select to see current stations. Important: tide and currents will not be displayed unless these toolbar buttons are selected. Displaying Tides Available tide stations will show on the chart as green graphs with a "T" logo: The "T" becomes a yellow and blue vertical bar when the scale is greater than The tidal rise is 2. The blue part is "water".
The "V" inside he bar indicates that the tide is decreasing towards Low Water. Here, the tide is rising towards High Water. Low Water looks like this. High Water Looks like this. Current visitors New profile posts Search profile posts. Boat Info. OpenCPN Help. Thread starter shemandr Start date Jun 2, JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
Jan 1, 6, Slickcraft 26 Greenport, NY. I'm not taking this aboard. I want to study the local waters in my new home waters of St. So far I haven't been successful. Double clicking that opens a page of gibberish after the unzipper I downloaded this AM from the Apple Store is done with it. I was offered no choice of where to put the file on my laptop. Or is there a simple fix on my Mac Which I would rather use. Brian D. I remember some what the same issues years ago with a Windows machine.
My problem was unzipping the data file. Later I tried just installing the data file without unzipping and it extracted the needed files automatically. I don't recall if it needed to be in a certain location or folder. I think you can search for the file. It is only using the needed files and nothing more.
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