SeaVectors vs SeaBase

Official ENC charts. Seabed relief. Marine weather and currents. Your boat’s instruments. One app. SeaVectors brings together official charts, regional current models, marine forecasts, tide predictions, AIS collision awareness and your boat’s NMEA data. Explore full NOAA chart coverage for the United States and high-definition vector charts for the Canada West Coast. Try everything free for 30 days. PROFESSIONAL ENC CHARTS Charts use official S-57 data and S-52 symbology, with day/night palettes and a boat-specific safety contour. Tap objects to read their official attributes. Choose nautical, night, satellite or relief styles and control individual layers. SEE THE SEABED Shaded bathymetry reveals ledges, channels and drop-offs. Coverage includes British Columbia, the US West Coast, Puget Sound, Florida and the US East Coast, with detail down to 1 metre in selected areas. EXPLORE AND SAVE The crosshair identifies charted wrecks, rocks, obstructions, bridge clearances, lights, buoys, depths and bottom types. Charts cache as you browse. Download charts and relief for selected areas before departure, and manage saved data in Storage Management. CONNECT TO YOUR BOAT Connect over Wi-Fi to your NMEA 0183 or NMEA 2000 network for live speed, depth, wind, heading, position, RPM, fuel and more. Monitor multiple engines, tanks and batteries, and build your own instrument dashboard. AIS COLLISION AWARENESS See nearby vessels with closest point of approach (CPA) and time to CPA (TCPA). Custom thresholds, colour-coded risk and escalating alarms help identify developing collision risks. TIDES AND REGIONAL CURRENTS View CHS and NOAA station predictions for tide heights, highs and lows, current speed and direction, flood, ebb and slack. Animated currents use Canadian ECCC CIOPS models and NOAA regional models covering the Pacific and Atlantic coasts, Gulf of Mexico and Great Lakes, plus broader RTOFS East coverage. Nearby station predictions refine local currents where applicable, with Open-Meteo as a fallback. Smooth particles, speed-based colours and legends make flow easier to follow. WEATHER ON ONE TIMELINE Compare wind, gusts, waves, tides and currents in a redesigned panel with coloured curves and animated map overlays. Sources include NOAA NWS, Environment and Climate Change Canada, GEM, NOAA GFS, ECMWF IFS, ECMWF AIFS and Météo-France. Auto and Open-Meteo Best Match simplify selection. Open-Meteo marine forecasts and NOAA GFS-Wave add marine coverage. Open at NOW, keep the selected hour when switching tabs, and return to current conditions with one tap. Save available forecasts for offline access. Coverage and forecast length vary by location, source and time. PLAN AND RECORD Create routes with distance, ETA and fuel estimates, and preview them with simulation. Record and replay tracks. Save markers with notes, photos or video. Receive alerts for charted Restricted Areas and supported DFO fishing closures. YOUR UNITS, YOUR LANGUAGE Choose feet or metres, °F or °C, and knots, mph or km/h. Available in English and Simplified Chinese. SeaVectors aids navigation. It does not replace official paper charts, a proper lookout or prudent seamanship. Always cross-check. SUBSCRIPTION Includes a 30-day free trial. A subscription is required afterward for continued full access. Payment is charged to your Apple ID and renews automatically unless cancelled at least 24 hours before the current period ends. Manage or cancel in your App Store account settings. Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service https://seavectorsapp.com/terms/ Privacy Policy https://seavectorsapp.com/privacy/

Less apps. More sailing. Seabase is the offline-first sailing companion. Anchor alarm, offline nautical charts, GPS navigation, tides, and a logbook — every tool you need on the water, all working without a signal. No accounts. No ads. PAY ONCE Seabase is a paid app — a single one-time purchase, and it's yours forever. No subscription, nothing auto-renews, no in-app purchases, no ads. Every offline chart region offered is included with unlimited downloads. You pay once and get the whole app. ANCHOR ALARM Drop a virtual anchor and Seabase watches your position with phase-based drift detection — scope warnings, drift alerts, and critical alarms with sound and vibration. A sliding-window filter rides out GPS noise instead of waking you for it. Arm it after the fact with "Already Anchored" mode, pause and resume on the fly, and control the whole watch from your wrist. Replay any past anchor session on a scrubbable radar track. Built to wake you before your boat does. OFFLINE CHARTS Download nautical chart regions to your phone with OpenSeaMap seamarks built in. A global base layer keeps you covered when you sail past your downloaded zone. NOAA depth overlays for US waters when online. GPS NAVIGATION Long-press the chart to plan a route — built-in land detection flags legs that cross land. Live navigation gives you bearing, distance, ETA, cross-track error, and remaining distance with heading-up auto-rotation. Save routes and replay them. A dedicated GPS Navigator adds a radar HUD plus point-to-point go-to. APPLE WATCH Native watchOS companion — speed, heading, anchor radar, and a navigation arrow on your wrist. Arm, disarm, pause, and resume the anchor alarm from the watch. Start and stop trip recording remotely. Mirrors your iPhone's dark/light theme. TIDES 3,500+ tide stations worldwide, completely offline. NOAA-accurate harmonic prediction from a bundled database — no API call, no signal needed. A clear "now" hero card with a trend chart and high/low times. NEARBY PLACES An offline harbor and anchorage finder covering 25 cruising regions worldwide — marinas, fuel docks, pump-outs, ramps, and more — with a searchable list and an offline map view. Hand off any place straight to the GPS Navigator. LOGBOOK Auto-tracking trip recorder with idle detection, photos, notes, and a speed graph. Shareable trip cards with a route preview. CSV export. Sail Recap turns any recorded trip into a shareable highlight video. REFERENCE Knots with animations · COLREGS rules · NATO phonetic alphabet · Safety-equipment guide (US, EU, AU, UK) · VHF MAYDAY / PAN PAN / SÉCURITÉ guide · IALA buoyage. EMERGENCY Always-dark emergency screen so it works at night. Heave-to guide, quick-reference distress procedures, MOB tracker, and rescue contacts. PRIVACY Your trips, photos, and routes never leave your phone, and your GPS position is never sent anywhere. The only network calls are to map/chart tile hosts for first-time region downloads. No accounts, no analytics, no tracking. LICENSE Recreational use only. Not a substitute for professional navigation equipment, official charts, or sailing certifications. You are responsible for your safety on the water. Built by sailors. Yeoman Ventures LLC, California. www.seabase.app · gosailing@seabase.app