PassageMaster™

Disclaimers

Effective date: 12 July 2026

Last updated: 9 November 2026

Version: 0.3

These Disclaimers are part of the Terms of Service and the End User License Agreement for PassageMaster™, operated by Astramara, LLC. They explain the limits of what PassageMaster™ is and how you should — and should not — rely on it.

PassageMaster™ is a decision-support cruising companion. It assists with planning, situational awareness, and understanding your vessel and surroundings. It does not replace official charts, certified navigation equipment, prudent seamanship, or the judgment of a vessel's captain.

1. Navigation disclaimer

PassageMaster™ is not to be used for navigation. It is not a certified electronic chart system (ECS/ECDIS), does not meet SOLAS or other carriage requirements, and does not satisfy any regulatory requirement for approved navigational equipment. Maps, satellite imagery, overlays, imported passages, waypoints, distances, bearings, and estimated times are planning context only and may be inaccurate, incomplete, or out of date.

Only official government charts, publications, and notices to mariners — together with certified equipment and a proper lookout — provide the information required for safe navigation. Any passage line, imported file, measured path, or track shown in PassageMaster™ is planning context and decision-support only. It is not a recommended track, not official carriage, and must not be followed as direct navigation guidance.

PassageMaster™ is not a certified ENC and not official carriage. No hosted commercial chart service is part of the current release.

2. Marine safety disclaimer

Boating and offshore passage-making are inherently hazardous and can result in property damage, serious injury, or death. PassageMaster™ is a tool for awareness and planning; it is not a safety device. You assume all risks associated with your use of the Service in the marine environment, including data inaccuracy, loss of connectivity, sensor or device failure, and battery depletion.

The captain retains full and sole responsibility for the vessel, crew, passengers, passage decisions, watchkeeping, safety equipment, training, and compliance with applicable laws and regulations. In an emergency, follow the guidance of the U.S. Coast Guard or the relevant rescue authority; PassageMaster™ does not transmit distress calls.

Emergency help in the Service, including Quartermaster, is a helper only. It is not the Coast Guard, not a rescue coordination center, and not search and rescue.

Share location is not a distress system. Share location is captain-opt-in and password-gated. It is not limited to family. It shows share-safe position geometry (last fix, trail since sharing started, and a planned line when one is published) only to people who have the link and the share password. The password is not placed in the link or in email. You choose 14, 30, or 60 days when you create the session. The default is 30 days. It is not an EPIRB or PLB, not a VHF/DSC distress alert, not a filing with a rescue coordination center or the U.S. Coast Guard, not certified tracking or navigation for shore viewers, and not a substitute for registered distress beacons or official rescue procedures. Revoke or expiry ends access. A stale last-fix is not a mayday. That expiry is not a distress retention period.

Man-overboard crew card. The man-overboard crew card is decision-support. It does not replace the captain's judgment, a practiced recovery, or the Coast Guard or rescue authority. It is not a certified SAR procedure. It does not appoint a person in command. PassageMaster™ does not transmit the call. Pan-Pan is not taught on this card. It stays on the existing VHF tab.

The man-overboard crew card uses this wording:

1. Mark. "If a position was available, the life-ring button marked where the boat was, not where the person is. No position means no mark."
2. Radio. "If a life is in the water, call Mayday on channel 16. Use the radio's own distress or MOB control if the boat has one. PassageMaster does not send the call. Then follow the Coast Guard or the rescue authority."
3. Recovery, including sail after the sail is depowered. "Use the recovery method this crew has practiced on this boat. Keep a lookout pointing. Stop the propeller before you are alongside." The card does not give rudder angles or a named turning procedure.
4. Lookout when short-handed. "If more than one person is left aboard, one person points and does no other job."
5. Jobs, not a new captain. "Someone else puts the throttle in neutral and depowers the sail. Someone else uses the radio and the filled-in script. Give first aid only within the training this crew has. This does not appoint a new captain."
6. Anchor. "The boat may stay put while the person drifts. The mark is the boat. Get underway only while someone is still watching them."

Also on that card: shout and keep shouting; throw flotation and stay on the boat; put the throttle in neutral; if the person may be between the boat and the pier, use neutral and a line, ladder, or throwable. Quartermaster speaks only this card. It does not add its own seamanship advice.

The card does not show a Williamson turn or other trained-turn steps. The U.S. Coast Guard Boat Crew Seamanship Manual remains a reference for trained crews. Those steps are not on the card.

The only alert claim is that open screens on this boat's network were sent the notice. PassageMaster™ does not say the crew has been alerted, and it does not claim a closed, locked, or asleep app was alerted. The notice is not a distress call, not an autopilot command, and not a change to the vessel profile. Another signed-in device on this boat can receive it through the cloud. Those screens label the source as cloud and show the time it was heard. It does not go to shore followers or Share location.

The mark is where the boat was at the press. It is not the person. No position means no pin. The mark stays in memory on the device. It is not saved with your other onboard data.

AIS. PassageMaster™ does not provide CPA or TCPA as a certified collision-avoidance safety system. It does not claim a working internet AIS traffic picture. An empty AIS display is not an all-clear.

A Float Plan organized in the Service is not filed with the U.S. Coast Guard or any other authority.

Anchor Alarm, where shown, is a decision-support swing circle. It is not a certified anchor watch.

3. AI / Quartermaster disclaimer

Quartermaster is an artificial-intelligence assistant. When you interact with it, you are interacting with AI, not a human expert. Its responses are generated automatically and may be inaccurate, incomplete, outdated, or unsuitable for your situation. Quartermaster is decision-support only.

4. Data accuracy and freshness disclaimer

PassageMaster™ presents information from multiple sources, including third-party and derived data (map imagery, charts, surveys, weather, tides, currents, community and cruiser references, and vessel sensor data). We do not warrant the accuracy, completeness, reliability, or timeliness of this information. Data may be stale, cached, simulated, manually entered, or of low confidence, and source availability may vary.

Where the Service indicates the source, timestamp, or freshness of data, that indication is provided to help you judge reliability — not as a guarantee. Do not blend live vessel data, forecasts, historical data, and community reports without considering which source each conclusion depends on.

5. Weather, tides, and currents

Environmental information is provided for general planning and awareness and can be delayed, incomplete, or inaccurate. Always consult official marine forecasts, bulletins, and local notices, and apply your own judgment before making passage decisions.

PassageMaster™ does not weather-route. It does not draw isochrones, run a polar optimizer, recommend a track, or tell you to leave now. Passage Weather packs are membership-gated decision-support along a downloaded corridor, built from NOAA GFS / GFS-Wave and ECMWF Open Data and adapted by Astramara. They are not an official National Weather Service, NOAA, or ECMWF forecast, and they are not an endorsement by those agencies. Open-Meteo is a separate fallback. It is not blended with a pack or with a captain-supplied GRIB. A captain-supplied GRIB file, including one requested through the device email program, is the captain's own file. It is not a PassageMaster™ forecast, and a pack does not silently replace it.

6. Derived depth (USACE) and chart overlays

Where enabled, USACE-derived depth overlays and chart overlays are decision-support context only and are subject to additional limitations and framing described in the app. Derived depth is the shoalest surveyed sounding in a cell, reported to MLLW when that datum is present. It is not the depth at that exact point or tide, and it is not a guaranteed under-keel clearance.

Chart imagery is not a certified ENC. Vector Charts is not a current chart choice in the app. EOX is not a current live satellite choice. A package already stored on a device may still open. Nothing in this section is a certified-navigation claim.

7. Limitation of liability ("AS IS")

THE SERVICE, INCLUDING ALL DATA AND AI OUTPUT, IS PROVIDED "AS IS" AND "AS AVAILABLE", WITHOUT WARRANTIES OF ANY KIND, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, AND NON-INFRINGEMENT.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, ASTRAMARA AND ITS SUPPLIERS ARE NOT LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY PERSONAL INJURY OR PROPERTY DAMAGE, ARISING FROM YOUR USE OF OR RELIANCE ON THE SERVICE. Astramara's total aggregate liability is limited as set out in the Terms of Service.

Nothing here excludes or limits liability that cannot be excluded or limited under applicable law. Some jurisdictions do not allow certain exclusions or limitations, so parts of this section may not apply to you; in that case, this section applies to the fullest extent permitted.