Skippo’s nautical charts are designed to resemble traditional paper charts, providing a reliable and detailed view of the waters. Thanks to vector-based technology, you can zoom in and out without losing clarity. You can also add layers of additional information, making planning and navigation smooth and adaptable.
Data Sources
To ensure accurate and up-to-date information, ENC data (Electronic Navigational Charts) is retrieved from multiple official sources:
Sweden:
More about chart data: Swedish Maritime Administration and Hydrographica
Chart symbols: Kort 1 / INT 1, Hydrographica, Harbour guide
Norway:
More about chart data: Kartverket
Chart symbols: Kartverket
Denmark:
More about chart data: Danish Geodata Agency
Chart symbols: Kort 1 / INT 1
Finland:
More about chart data: Traficom
Chart symbols: Detailed symbol explanation
Skippo presents chart data from official sources but is not responsible for its content. If you discover any errors or omissions in the charts, please report them directly to the responsible authority in your country. You can find contact information through the links above.
Depth Contours
To help interpret water depth easily, depth contours are used. These are indicated with colored lines and shaded water areas. The contour line shows the depth limit for that area. For example, a label "3" means the area outside the contour is deeper than 3 meters, and the area inside is shallower.
The color shading is based on the minimum depth provided in the S57 chart data for that area. Dark blue is used near the shore where it’s shallower, and white for deeper areas. The exact depth levels represented vary depending on local cartography and differ between countries and regions.
In areas covered by Hydrographica’s special charts in Sweden, the darkest blue water area indicates 0–2 meters. In other areas, it typically represents 0–3 meters.
Open Map settings to choose which depth contours you want to show on the nautical chart.
Coverage and Regions
Skippo’s app provides nautical charts for Sweden, Norway, Denmark, and Finland. Coverage varies depending on country and subscription.
Sweden
When downloading the app in Sweden, charts for the Swedish coastline and major lakes (Vättern, Vänern, Hjälmaren, Mälaren) are included.
With a PREMIUM subscription, you also get access to Hydrographica’s measurements for Helgasjön, Sommen, and Storsjön.
To access Norwegian and Finnish charts, an active navigation package (START, SMART, or PREMIUM) is required.
Danish and Baltic charts are not included by default but can be purchased separately. See all our subscriptions here.
With HYDROGRAPHICA, you get access to detailed special charts for Swedish waters.
Norway
When downloading the app in Norway, charts for Norwegian waters are included.
Swedish, Finnish, and Danish charts are not included by default but can be purchased separately. See all our subscriptions here.
With HYDROGRAPHICA, you get access to detailed special charts for Swedish waters and official charts for Finnish waters.
Denmark
When downloading the app in Denmark, charts for Danish waters are included.
To access Norwegian charts, an active navigation package (START or SMART) is required.
Swedish and Finnish charts are not included by default but can be purchased separately. See all our subscriptions here.
With HYDROGRAPHICA, you get access to detailed special charts for Swedish waters and official charts for Finnish waters.
Finland
When downloading the app in Finland, charts for Finnish waters are included.
To access Norwegian charts, an active navigation package (START or SMART) is required.
Swedish and Danish charts are not included by default but can be purchased separately. See all our subscriptions here.
With HYDROGRAPHICA, you get access to detailed special charts for Swedish waters and official charts for Norwegian waters.
Chart Layers
Switch between different chart layers depending on your situation and needs. Whether you're planning a route, looking for a sheltered cove, or navigating from a harbor, there’s a chart layer that fits.
Nautical Chart – The standard navigation layer based on official chart data (link: see “Data Sources” section)
Hydrographica Special Charts – More detailed charts for Swedish coasts and lakes, showing 0–2 meter depth contours and marked mooring spots
Aerial Photos – Useful for identifying trees, cliffs, buildings, or trails
Land Maps – Provides a clearer view of settlements and road networks. Land map data comes from Eniro.
Chart Symbols
Tap the life jacket icon and then "Chart Symbols" to view the list of symbols and explanations. Below are links to symbol guides for each country’s official chart data:
Sweden: Kort 1 / INT 1
Norway: Kartverket
Denmark: Kort 1 / INT 1
Finland: Detailed symbol explanation