⚓ Florida ICW boaters
Florida ICW navigation. Professional-grade. No subscription.
ICW Navigate is the definitive iOS app for Florida's Intracoastal Waterway — combining official NOAA nautical charts, real-time tide predictions, marine weather, and our exclusive Water Safety Rating into one beautifully designed app. Buy once, own forever.
NOAA-Certified Charts
Official ENC vector charts, not third-party redraws.
Water Safety Rating
Proprietary composite score: wave + wind + tides + weather.
Free Gov APIs
Tides, marine weather, charts — all free government data.
Offline Ready
Critical charts and tide predictions cached for offline use.
ICW-Specific
Pre-loaded mile markers, bridge schedules, anchorages.
One-Time $14.99
No annual subscription, no paywalled features — ever.
Everything a Florida ICW boater needs in one streamlined app
From NOAA charts to tide prediction to real-time marine weather — purpose-built for the Florida Intracoastal Waterway.
Marine Navigation
Official NOAA ENC vector charts with real-time GPS position, ICW channel overlay, and full route navigation HUD.
- NOAA WMS raster tile overlay on MapKit
- Pre-loaded Florida ICW waypoints, mile markers, bridges
- Follow / Heading-Up / North-Up map modes
- Active navigation HUD: SOG, COG, bearing, ETA, XTE
- GPX route import/export
- Off-route haptic alert (>0.1 NM deviation)
Water Safety Rating
Proprietary composite score (0–100%) computed from five weighted marine conditions factors — a single, glanceable gauge for go/no-go decisions.
- Wave Height (30% weight) — Open-Meteo Marine API
- Wind Speed (25%) — NOAA CO-OPS
- Precipitation Probability (20%) — Open-Meteo
- Tidal Stage (15%) — NOAA CO-OPS Tides
- Barometric Pressure Trend (10%)
- Color-coded: Excellent / Good / Marginal / Poor / Dangerous
Tides & Water Conditions
Auto-selects nearest NOAA CO-OPS tide station based on GPS position. Displays full 7-day tide chart and real-time water conditions.
- Sinusoidal tide chart (Swift Charts)
- 7-day high/low predictions in scrollable list
- Tidal stage indicator: Rising / Falling / High Slack / Low Slack
- Water temperature (°F) and air temperature
- Barometric pressure with rising/falling trend arrow
- Sunset countdown prominently displayed
Marine Weather Forecast
7-day marine-grade forecasts from WeatherKit + Open-Meteo Marine API, including wave height, swell, and hourly precipitation timeline.
- 7-day daily summary: Min/Max temp, conditions, precipitation %
- Hourly forecast scroll: temperature, wind, precipitation
- Wave height & swell height/direction forecast (7-day)
- Hourly precipitation timeline bar
- Barometric pressure trend chart (Swift Charts)
- Imperial / Metric unit toggle
Waypoint Management
Full waypoint and route creation system with pre-loaded ICW data and iCloud sync across all your Apple devices.
- Long-press map to drop waypoint
- Types: Anchorage, Fuel, Marina, Bridge, Hazard, Custom
- Pre-loaded: ICW mile markers, Florida bridges with clearance
- Route creation with drag-to-reorder
- CloudKit Private DB sync across devices
- GPX import/export for route sharing
Offline & WidgetKit
Download Florida ICW chart regions for offline navigation. WidgetKit widgets surface key data without opening the app.
- Downloadable NOAA ENC S-57 chart regions per area
- 7-day tide predictions cached at app launch
- Background BGAppRefreshTask for tides/weather/rating
- Water Rating widget (Medium) — gauge + wind + waves
- Tide widget (Small) — next H/L time and tidal stage
- Sunset widget (Small Lock Screen) — today's countdown
One score. Instant go/no-go decision.
The Water Safety Rating blends five weighted real-time data sources into a single 0–100% composite score. Color-coded from green to red, it tells you at a glance whether conditions are safe for ICW navigation.
30% · Wave Height
Open-Meteo Marine API. 0 ft = 100%, 3 ft+ = 0%.
25% · Wind Speed
NOAA CO-OPS. 0 kts = 100%, 25 kts+ = 0%.
20% · Precipitation
Open-Meteo Forecast. 0% chance = 100%, 100% = 0%.
15% · Tidal Stage
NOAA CO-OPS Tides. Rising mid-tide = 100%.
10% · Pressure Trend
NOAA CO-OPS. Rising = 100%, rapidly falling = 0%.
Color-Coded Bands
85–100% Excellent · 65–84% Good · 45–64% Marginal · 25–44% Poor · 0–24% Dangerous.
Real-time tide intelligence
NOAA CO-OPS tide data auto-selected for your nearest station. Beautifully rendered sinusoidal tide charts with 7-day predictions and a full current conditions panel.
Auto Station Select
Nearest NOAA CO-OPS tide station auto-selected based on your live GPS position — no manual setup required.
Sinusoidal Tide Chart
Today's full tide curve rendered in Swift Charts, with a live current-time cursor and High/Low markers.
7-Day Predictions
Scrollable high/low tide times and heights in feet above MLLW for the next 7 days.
Tidal Stage Badge
Animated Rising / Falling / High Slack / Low Slack indicator with countdown to the next tide event.
Water Temperature
Current water temperature (°F) pulled from the nearest NOAA CO-OPS meteorological station.
Barometric Pressure
Current pressure (mb) with computed trend arrow from the last 3-hour delta — a key input to the Water Safety Rating.
7-day marine-grade forecasting
Two complementary data sources — Apple WeatherKit for current precision, Open-Meteo Marine API for extended wave and swell forecasts — blended into one cohesive view.
| Data Point | Source | Where Displayed |
|---|---|---|
| Sunrise / Sunset times | WeatherKit / SunriseSunset.org | Conditions Tab header |
| Current air temperature | WeatherKit / NOAA CO-OPS | Conditions Tab |
| 7-day min/max temperature | Open-Meteo Forecast API | 7-day forecast list |
| Wind speed & direction (current) | NOAA CO-OPS Met Station | Conditions Tab, Water Rating |
| Hourly wind forecast | Open-Meteo Forecast API | Hourly forecast scroll |
| Precipitation probability | Open-Meteo Forecast API | Hourly forecast, Daily summary |
| Wave height (current + forecast) | Open-Meteo Marine API | Conditions Tab, Water Rating |
| Swell height & direction | Open-Meteo Marine API | Conditions Tab detail |
| Barometric pressure trend | NOAA CO-OPS (3hr delta) | Conditions Tab — trend arrow |
Your data stays on your device
All location data and waypoint information stays on your device and in your private iCloud container. We never sell or share your data.
- Location data → on-device & your private iCloud only, never our servers
- Waypoints, trips & bookmarks → on-device + private iCloud CloudKit
- Authentication → Sign in with Apple; BassTech stores no passwords
- Usage & crash analytics → anonymized via Apple App Store Connect
- NOAA, Open-Meteo & FWC → public data, your identity is never transmitted
- We never sell, trade, or monetize your data
Simple, one-time pricing
Buy once, own forever. No subscriptions, no in-app purchases. All API data sources are free government APIs.
The complete Florida ICW navigation app — charts, tides, marine weather, Water Safety Rating, offline capability, and WidgetKit — no subscription required.
- Full NOAA nautical chart navigation
- Water Safety Rating with 24hr forecast
- 7-day tide predictions + real-time conditions
- Marine weather forecast (wave, swell, wind)
- Offline chart download (Florida ICW regions)
- Pre-loaded ICW waypoints, bridges, anchorages
- WidgetKit — Water Rating, Tide, Sunset widgets
- Siri shortcuts: "What's the water rating?"
- No subscriptions, no in-app purchases
All API data sources are free government and open-source APIs — zero ongoing data licensing costs. Pricing subject to confirmation at App Store submission. All purchases processed by Apple.
Frequently asked questions
What iOS version does ICW Navigate require?
ICW Navigate runs on iPhone with iOS 17 or later.
Does it work on other US waterways beyond Florida?
ICW Navigate is purpose-built for Florida's Intracoastal Waterway, with pre-loaded Florida ICW mile markers, bridges, and anchorages. Its charts, tides, and marine weather draw on NOAA and Open-Meteo data.
Can I use ICW Navigate offline?
Yes. You can download NOAA ENC S-57 chart regions per area for offline navigation, and 7-day tide predictions are cached at app launch.
How does the Water Safety Rating work?
It blends five weighted real-time factors into a single 0–100% score: wave height (30%), wind speed (25%), precipitation probability (20%), tidal stage (15%), and barometric pressure trend (10%). The result is color-coded from Excellent to Dangerous.
Is there a subscription fee?
No. ICW Navigate is a one-time $14.99 purchase with no annual subscription and no paywalled features.
Are there in-app purchases?
No. There are no in-app purchases — all data sources are free government and open-source APIs.
Is my location data safe?
Yes. Location data stays on your device and syncs only to your private iCloud CloudKit container. It is never stored on BassTech servers and never shared with third parties.
Still have questions? Contact Support →
Download ICW Navigate
Available on the App Store. Scan the QR code or tap the badge to download. One-time $14.99 · no subscription.