Knowledge

Navigation

- Aqua Map Chart Viewer is a free, web-based online nautical chart with basic functions and worldwide coverage, except Danish waters.  
- Users can call up navigational aids, depth and harbour information and display wind, wave and current data via a weather overlay with a 48-hour slider.  
- Route planning, synchronisation with the mobile app and offline use are only possible in the paid version with premium access.

Navigation: Aqua Map Chart Viewer, free online nautical charts - tall ship event as a live example

- Passage Planner extends Windy with favourable weather routing with multi-planning and uses several global weather models, but only a simple map.  
- In the practical test, the calculated routes showed implausible loops and return routes; Navimetrix was faster and provided more comprehensible routes.  
- The lack of nautical charts with depths, fairways and buoys makes a comparison with real nautical charts necessary and limits the practicality.

Navigation: Passage Planner - Weather routing plugin for Windy

- On 10 August 2025, 64 million cubic metres of debris in Tracy Arm Fjord triggered a landslide and a 481-metre-high tsunami.  
- The wave was caused by abruptly displaced water, shaved off vegetation up to 481 metres high and is the second highest run-up on record.  
- Researchers see glacier retreat due to climate change as a destabilising factor and expect similar events with potential danger for cruise ships.

Mega tsunami 2025: 481 metre high monster wave - horror scenario like in an eco-thriller

- Mobile apps enable the display and remote control of on-board instruments on smartphones and tablets via WLAN gateway or special hardware.  
- There are specialised solutions for NMEA-0183/2000, regatta sailors, cruising sailors and anglers, as well as branded apps from Garmin, Raymarine, B&G and Lowrance.  
- Price and licence models range from free basic versions and one-off payments to expensive annual subscriptions with sometimes criticised connection and synchronisation problems.

On-board instruments on the tablet: 11 apps for monitoring ship data

- Recreational boaters must use up-to-date paper charts, which can be kept up to date with the publisher's own annual correction sets.
- Updating is done with PDF or paper updates by writing in with waterproof pens and cutting out and sticking on cover sheets.
- Correction is cheaper than buying new maps and promotes map comprehension; electronic maps usually require new chips instead of correction sets.

Navigation: 2026 correction sets for DK Baltic Sea charts are available

- High-quality, sometimes high-resolution weather and routing apps with special models for certain areas are essential for safe cruise planning.  
- The 15 apps presented cover a range from free services to complex professional solutions with routing, satellite connection and plotter functions.  
- Price and subscription models vary greatly; users have to choose between one-off purchases, annual subscriptions and regionally limited packages depending on their needs and budget.

Apps for sailing: The best weather apps for the 2026 season

- 15 navigation and safety apps cover needs ranging from anchor monitoring and weather routing to direct emergency calls.  
- The range of functions and prices vary greatly: from free rescue apps to complex systems costing over €100 per year.  
- Choosing the right app depends on the area, platform, hardware integration, offline use and desired professional functions.

Sailing apps 2026: The 15 best apps for navigation and safety

- 20 selected apps cover weather, navigation, on-board instruments, safety, anchoring and trip planning for sailors in 2026.  
- Many applications offer powerful functions, but sometimes require complex set-up, ongoing subscriptions and incur additional costs for nautical charts.  
- Offline functionality, connectivity to on-board hardware and direct emergency call and alarm functions are key criteria for selecting apps on board.

The 20 most important sailing apps 2026: Everything about weather, navigation and trip planning

- The "KIRMES" AI system monitors shipping traffic on the Kiel Fjord, recognises unusual movements and reports possible threats to the authorities.  
- Mobile sensor units on land and on the ship "Vektor" record extensive traffic, radio, GPS and flight data, including from pleasure craft.  
- KIRMES is designed to recognise hybrid attacks at an early stage, can be used flexibly and could also support logistics, offshore infrastructure and research.

Artificial intelligence: AI surveillance will also target sailors in 2026

- Celeste ergänzt Galileo und EGNOS als dritte PNT-Säule Europas aus dem Niedrigorbit und stärkt Unabhängigkeit sowie Störungsresistenz gegen GPS-Ausfälle.  
- Die elf LEO-Satelliten nutzen L-, S-, C- und UHF-Band für robustere Navigation, Indoor-Empfang, 5G/6G-Integration und schnellere Zentimeter-Genauigkeit.  
- Start der ersten zwei Satelliten erfolgt 2026 per Rocket Lab wegen Frequenz-Deadline der ITU, bis 2035 sind bis zu 300 operative Celeste-Satelliten geplant.

Navigation: GPS alternative Celeste - ESA launch on 25 March

Friday the 13th: Why skippers get nervous about flowers and rabbits today

Buy pleasure craft charts online: The new DK sports boat charts are here!

Navigating successfully while sailing ➤ Here's how! ✅ Learning to navigate while sailing: tips, sat nav apps & more! ✅

Navigation while sailing: Learning to navigate at sea

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Navigation while sailing: Learning to navigate at sea

Navigation
Aqua Map Chart Viewer, free online nautical charts - tall ship event as a live example

Navigation
Passage Planner - Weather routing plugin for Windy

Mega tsunami 2025
481 metre high monster wave - horror scenario like in an eco-thriller

On-board instruments on the tablet
11 apps for monitoring ship data

Navigation
2026 correction sets for DK Baltic Sea charts are available

Apps for sailing
The best weather apps for the 2026 season

Sailing apps 2026
The 15 best apps for navigation and safety

The 20 most important sailing apps 2026
Everything about weather, navigation and trip planning

Artificial intelligence
AI surveillance will also target sailors in 2026

Navigation
GPS alternative Celeste - ESA launch on 25 March

Friday the 13th
Why skippers get nervous about flowers and rabbits today

Buy pleasure craft charts online
The new DK sports boat charts are here!

Navigation while sailing: Learning to navigate at sea

NavigationAqua Map Chart Viewer, free online nautical charts - tall ship event as a live example

NavigationPassage Planner - Weather routing plugin for Windy

Mega tsunami 2025481 metre high monster wave - horror scenario like in an eco-thriller

On-board instruments on the tablet11 apps for monitoring ship data

Navigation2026 correction sets for DK Baltic Sea charts are available

Apps for sailingThe best weather apps for the 2026 season

Sailing apps 2026The 15 best apps for navigation and safety

The 20 most important sailing apps 2026Everything about weather, navigation and trip planning

Artificial intelligenceAI surveillance will also target sailors in 2026

NavigationGPS alternative Celeste - ESA launch on 25 March

Friday the 13thWhy skippers get nervous about flowers and rabbits today

Buy pleasure craft charts onlineThe new DK sports boat charts are here!

Navigation
Aqua Map Chart Viewer, free online nautical charts - tall ship event as a live example

Navigation
Passage Planner - Weather routing plugin for Windy

Mega tsunami 2025
481 metre high monster wave - horror scenario like in an eco-thriller

On-board instruments on the tablet
11 apps for monitoring ship data

Navigation
2026 correction sets for DK Baltic Sea charts are available

Apps for sailing
The best weather apps for the 2026 season

Sailing apps 2026
The 15 best apps for navigation and safety

The 20 most important sailing apps 2026
Everything about weather, navigation and trip planning

Artificial intelligence
AI surveillance will also target sailors in 2026

Navigation
GPS alternative Celeste - ESA launch on 25 March

Friday the 13th
Why skippers get nervous about flowers and rabbits today

Buy pleasure craft charts online
The new DK sports boat charts are here!