# Departures and arrivals

Receive notices when AIS Fleet detects a vessel departing or arriving, and when a boat you watch comes within a distance you choose of your own boat. Choose in-app notices, e-mail or both, and understand how coverage affects them.

This is the part that means you do not have to keep a map open.

Follow a vessel to receive notices when AIS Fleet detects her getting under way or arriving. These are inferred from position reports, so they can be delayed or missed when coverage is limited. **A departure notice** names where she left from when we can identify the place; the e-mail also carries a map. **An arrival notice** names where she got to, and where the passage began when we can tell. Each notice links to that vessel on your map, a boat that has since gone quiet included: the map goes to the position she last reported and says how old that report is.

A vessel that keeps her log with Saillogger and shares it names those places from her own logbook, and, where her owner publishes her individual trips, brings a map of the passage she has just completed. Her owner's photo of her leads the message where there is no map to show.

**There is no digest.** Three trips in a day is three departures and three arrivals, one notice each.

## Where a notice reaches you

Choose how each boat's notices reach you.

- **In AIS Fleet.** The bell at the top of every screen carries a count and opens **Notifications**: what has happened, newest first, with one boat's movements gathered into a single entry so a busy vessel cannot bury a quieter one. Tapping an entry takes you to that vessel on the map.
- **By e-mail**, so it reaches you with AIS Fleet closed.
- **By push in the iPhone app**, when **Push** is available in Notification settings and you have enabled it on that phone. Departure and arrival pushes are quiet: look in Notification Center rather than waiting for a sound.

Push previews support international characters and emoji; long text may be shortened.

> [!IMPORTANT]
> If **Push** is not offered in your app, keep **E-mail** enabled for notices while AIS Fleet is closed. Your mail app controls whether those e-mails appear on the lock screen. You can always read the feed from the website's bell or **You** > **Notifications** in the app.

Opening the feed leaves notices unread until you tap them. **Mark all read** clears the displayed unread notices, and **Load older** goes back further.

## Choosing what reaches you {#choosing-what-reaches-you}

**Notification settings**, reached from the gear on Notifications or from the account menu, is a grid: a row for each kind of notice, a **Notifications** switch that decides whether it reaches you at all, and **E-mail** beside it for the same notice in your inbox.

**Notifications** on a row puts that kind in your notifications on the website and in the app. **E-mail** is a way the same notice also reaches you, so it only sends while Notifications is on: turn Notifications off and E-mail is greyed beside it, with your choice kept for when you turn it back on.

In the iPhone app, **Push** sits beside E-mail as a second way to receive the same notice, on the same rows and on each boat, and follows the same rule. Push is set in the app, where the permission lives.

| Row | What it is | Ways to receive it |
| --- | --- | --- |
| Followed boats | A boat you follow departs or arrives | E-mail, Push |
| New followers | Someone follows your boat, or adds her to a list | E-mail, Push |
| Direct messages | Another member writes to you | E-mail, Push |
| Fleet messages | Someone posts in a fleet you are in | E-mail, Push |
| Your stations | A receiver of yours goes quiet, and when it is back | E-mail, Push |
| Your fleets | A fleet you are in is paused by its organizer's plan, or ends | E-mail, Push |
| Your lists | A list you subscribe to is no longer shared, or ends | -- |
| Near your boat | A boat you watch comes within the distance you chose of your boat | E-mail, Push |

The two message rows have no Notifications switch: a message always appears in **Messages**, with its own unread count, and what you set is whether it also reaches your inbox or your phone. **Your lists** is the other way round: it appears in your notifications and is not sent anywhere else.

![Notification settings: a row for each kind of notice, a Notifications switch, and E-mail beside it. A greyed cell is a way that row does not offer, or one waiting for Notifications to be turned on.](https://assets.saillogger.com/static/docs/aisfleet/notification-settings.png)

Notifications and e-mail start on, on every plan including the free one, and each e-mail carries a link back to that screen. When you enable push in the app, its switches start on except **Fleet messages**, which you turn on yourself. An existing per-boat e-mail mute also keeps that boat's push off until you choose otherwise.

### One boat at a time

Underneath the grid, **Boats you follow** lists your vessels with the same ways of receiving, so one boat can be set differently from the rest. A boat has **E-mail** here (and **Push** in the app) and no Notifications switch of her own: whether she appears in your notifications comes from the lists and fleets she is on. Turn her E-mail off and she stops arriving in your inbox while staying somewhere you can look her up.

**Followed boats** above controls departures and arrivals; **Near your boat** controls nearby notices. A boat's own switch quietens both kinds at once, and stays available while either kind is on. You can therefore quieten her departures and arrivals while she can still tell you when she comes near your boat. Her list or fleet must also have that kind of notice switched on.

When both kinds are off or unavailable, your per-boat choices are kept and shown greyed out. There is a filter when the list is long, and a row at the top that sets every boat at once.

The row says **Saving** until AIS Fleet confirms a change. If the connection is lost, that setting returns to the last confirmed choice instead of continuing to look saved. The same row then says **Save not confirmed** and offers **Check again**, so you do not have to scroll back through a long list to discover that muting did not finish.

The quickest way to quieten one vessel is from the notice itself: the **...** on an entry about a boat you follow offers **Mute her**. That stops her e-mails and her pushes; she stays in your notifications, on your map, and keeps her slot, so you can look her up whenever you want. Muting is not unfollowing. A notice about a boat you do not follow, one that reached you through a list, has no mute of its own: the list's own switches are its volume control. [Lists](https://aisfleet.com/docs/lists.md)

To stop a boat appearing in your notifications altogether, turn the list or fleet she is on off, or take her off it.

### What is always sent

Sign-in codes, the answer to a boat claim, the verdict on a photo you sent, notices about your own plan, and a notice when somebody adds your boat to a fleet are not on that grid. They are sent because you asked for something or because something happened to your account, and they arrive whatever the switches say.

## When a boat comes near yours {#near-your-boat}

Besides telling you when a boat moves, a list or a fleet can tell you when one of its boats comes near your own boat. This needs your boat [linked to your account](https://aisfleet.com/docs/claim-your-boat.md) and heard on AIS: the distance is measured from her last reported position, not from wherever you happen to be.

### Where to set it

Open a list from **Lists**, or a fleet from **Fleets**, on the map, then open the row at the top of its roster: **Notifications and settings** on a list or fleet of your own, **Notifications and leaving** in a fleet somebody else runs, **Notifications and unsubscribing** on a list you subscribe to. That row's second line shows which notices are on. Behind it are two rows: **When these boats depart or arrive**, and **When one of these boats comes within** a distance **of your boat**. Each row has a **Notifications** switch and an **E-mail** switch beside it (and **Push** in the app), and the second row has a pull-down for the distance, from 1 to 20 nautical miles.

The same rows are on a list's settings page, and they are set separately for every list, every list you subscribe to, and every fleet. **Favorites** starts with both rows on, the distance at 3 nautical miles; every other list, every subscription and every fleet is quiet until you turn its rows on. A fleet's organizer cannot set them for you.

Existing e-mail and push choices are kept. A list or fleet previously set to e-mail without in-app notifications gains a place in your notifications while keeping push off.

On the list or fleet's page on the map, under the distance row, a line says how many of its boats are within that distance right now. Change the distance and the number changes with it. E-mail on a row is greyed until that row's Notifications switch is on, and when the matching switch under Notification settings is off, a line under the row says so.

The row appears once your boat has a position we can measure from. Until then, and if she has not been heard for a while, a line in its place says so, and nearby notices resume when she is heard again.

### When you are told

You are told **once per visit**: when a boat comes into your chosen distance from outside it.

- A boat that is already inside when you switch the row on, or that has been inside all along, is not announced. Boats that share your marina are therefore not announced day after day, and switching the row off and on, or changing the distance, never announces the boats already there.
- A boat that is lying still is not announced when your own boat is the one moving: sailing past the berths of boats you follow, or coming home to your own pontoon, does not produce a notice for every moored boat you pass. A fresh report from the same berth does not count as movement. A boat that is under way is announced whether or not your own boat is moving.
- A boat that only drifts about the edge of the distance is not announced again. She is announced when she comes back once she has been well outside it, and away for long enough that it reads as a fresh visit rather than a short hop out and back.
- When several boats from one list or fleet come within the distance at the same time, for example a fleet arriving in an anchorage together, you get one notice naming boats with the same channel choices. Your per-boat switches still apply to these combined notices: an e-mail mute stays out of your inbox, and a push mute stays off your phone.

A boat on more than one of your lists and fleets uses the largest distance you set for her, and the notice names the one whose distance fired.

### What the notice says

In AIS Fleet the entry names the boat and the distance you chose, names the list or fleet whose distance fired unless it is Favorites, and opens her on the map. A nearby notice about a boat you already have an unread notice for joins that same entry, which then counts her visits. The e-mail also says how far apart the two boats were and in which direction, whether she was under way, and when each boat was last heard, because the notice rests on those two reports. If your own boat's report is old, the e-mail says so.

Nearby notices are worked out from position reports as they arrive, so they follow the real event rather than arriving with it, and they can be missed where coverage is thin.

### Turning them off

**Near your boat** in [Notification settings](https://aisfleet.com/docs/departures-and-arrivals.md#choosing-what-reaches-you) is the switch for these notices, and a boat's own switch under **Boats you follow** quietens her nearby notices along with her movements. **Mute her** on a notice about a boat you follow does the same. Without a boat linked, the row in Notification settings is there and does nothing until you link one.

## Following a cruise ship or a ferry

Cruise ships and ferries are often heard near busy ports and coasts, so searching the ship's name is a useful starting point. Coverage still varies along the route.

Expect that to be frequent. A ship calling somewhere most days is roughly two notices a day for the length of the voyage, and a working ferry is far more than that.

You do not have to choose between that and losing her: **turn her E-mail off**, and she stops arriving in your inbox while staying somewhere you can look her up. Her entries in Notifications are gathered together too, so a day of ferry crossings reads as one line rather than a wall of them.

The same applies to a ferry whose route passes near your boat: she is announced when she comes within your distance, and again only after she has been away for a while, and her E-mail switch is the volume control.

On a longer ocean leg she can go quiet for days and reappear as she comes back into range. A marker that has not moved is telling you when she was last heard, not that she has stopped.

## Watching someone who is aboard {#watching-someone-who-is-aboard}

If someone you care about is aboard, gaps in updates can be worrying. Here is what AIS Fleet can and cannot tell you:

- **Long gaps can result from limited coverage.** AIS is a line-of-sight radio signal, so an offshore vessel may be beyond receiving stations for days. The absence of reports cannot establish her condition. [Where the positions come from](https://aisfleet.com/docs/how-ais-works.md)
- **A departure or arrival notice can be late, or can not come at all.** They are worked out from her movement rather than announced by the vessel, so they follow the real event rather than arriving with it. A missing notice is not evidence about the vessel.
- **The last-heard time on her panel is the more reliable number.** Notifications are a record of what has happened; her panel is what we currently know.
- **A shift of berth or a drag at anchor can read as a short trip.** If you get a departure and an arrival ten minutes apart in the same harbour, that is usually what it was.
- **Working ships keep working schedules.** A training ship, a research vessel or a supply boat may sit for a fortnight and then move three times in a day. Neither is a signal about anybody aboard.

> [!WARNING]
> **AIS Fleet cannot confirm that a vessel or the people aboard are safe.** It is not a navigation, collision avoidance, search and rescue or emergency service. If you believe someone is in danger, contact the coastguard or rescue service for that area. Do not wait for the map to update or for a reply from AIS Fleet support.

Before a passage, it can help to agree with the person aboard how and when you will hear from them, allowing for the communication options available on their vessel.

> [!NEXT]
> What the chart is showing you, and what its silence means: [Reading the vessel map](https://aisfleet.com/docs/the-vessel-map.md).