01 / RIGHT NOW
Live bridge data
Where she is, how fast, which way, and what the wind and the water are doing. The readings her own bridge is showing.
Signal K · Remote bridge monitoring
Your bridge,
ashore.
A Signal K plugin that records what your boat reports, from her bridge to her engines and tanks, and keeps it aboard. Open the dashboard from anywhere. Read-only, and what leaves the boat is sealed to your own screens.
Siparu
Bridge
DEMO
·
SOG · Knots
8.4
Nav state
Underway
SINCE 09:12 · 4h 51m
Position · WGS84
43°32.810′ N
007°01.240′ E
007°01.240′ E
COG
251°
HDG · True
247°
Wind · True
16.2kn
From · True
311°
Gust · Peak
21.4
AWA
42°S
Baro · hPa
1014
Air
22.8°C
Sea
19.7°C
Depth · m
34.3
BELOW TRANSDUCER
MachineryALL REPORTING
Port1492 rpm / 81.0 °C / 4.0 bar
Stbd1488 rpm / 81.5 °C / 4.1 bar
Gen 01496 rpm / 230 V / 19.2 A
Tanks6 TANKS
Fuel 064%
Fresh water81%
Black water23%
Trip computerSO FAR
Distance · nm
38.6
Under way
4:51
Avg · kn
7.9
Max · kn
11.2
SIMULATED MOTOR YACHT, ENGINES ON HER NETWORK · READ-ONLY · SNAPSHOT EVERY 60s
No native modules
·
RPi → Victron Cerbo GX
·
Runs back to Node 20 · signalk-server 2.18
·
Open source plugin · Apache-2.0
·
Account DB in the EU
On screen
Four things she keeps, and one of them is live.
Everything runs on the boat. The dashboard comes with the plugin: open it on the bridge, or from a beach a thousand miles away.
02 / HER RECORD
Kept on the boat
She writes it all down and keeps it herself. Ask her about last Tuesday, or all of last season.
03 / PASSAGES
Written up for you
She knows when you left and when you tied up, and writes the passage up herself: how far, how long, and the track you took.
04 / CHART
Where she has been
Her track on a chart. The traffic around her shows while she is online, and is never written down.
Not a safety system
Siparu is not a navigation, safety or alarm system, and it does not replace going aboard to look. What you read has crossed networks that fail, her own uplink first: a screen with nothing wrong on it is not the same as a boat that is fine. Do not rely on it to protect life or property.
Setup · about five minutes
Install it yourself. No one touches your boat.
Siparu is a Signal K plugin, so the only question is what your boat runs already. Four doors, and behind every one of them the same five minutes. Not sure which door is yours, or whether she needs a box first? Will it work on my boat? answers that in four questions.
A · Signal K already
One click in the AppStore
Apps & Plugins → Store → Siparu → Install, then restart the server. There is nothing else to fetch and nothing to build.
SIGNAL K 2.18+ Read the steps → B · Raspberry PiThe box most boats end up on
A Pi 3B+ or newer on 64-bit Pi OS. Node, then Signal K itself, then door A. Signal K is told where her instruments are by hand; its setup tool does not ask.
PI OS 64-BIT Read the steps → C · Mac miniThe machine already in the saloon
The same install as a Pi, with one difference worth knowing before you start her: nothing on macOS makes Signal K come back after a reboot on its own.
macOS · INTEL OR APPLE SILICON Read the steps → D · Victron CerboVenus OS carries Signal K already
Venus OS Large has Signal K built in; you switch it on and go to door A. Siparu builds nothing native, which is what lets it install on a Cerbo at all.
VENUS OS LARGE Read the steps →Whichever door you came through, the rest is the same:
01
Install from the AppStore
One click in Signal K. Pure JS, so it installs clean.
02
Restart the server
A minute or two. We tell you straight.
~1-2 MIN
03
Open the dashboard
Already running, on the boat, over her own wifi, at http://<boat-ip>:3000/signalk-siparu/. Add a Signal K admin user before you pair.
ADMIN USER
04
Claim from your phone
Open a free account at siparu.app/app, then type the code her screen is showing there, or into the iPhone app. There is no Android app: on Android the browser is the app.
RFC 8628
05
Approve on board
One tap on the boat's screen. Live ashore. Then add a second screen while you are at it; a new one is approved from one you already hold.
TWO-SIDEDNone of this hands anyone a password, a network, or a device. The plugin reads Signal K and writes nothing back to it, and a pairing is approved on the boat, by you.
Security posture
Nobody gets into your boat.
Us included.
No deltas emitted
No PUT requests
Sealed since 0.2.0
Auditable source
01
It takes no commands
Nothing here can switch, set or move anything on your boat. It reads, and that is all it can do. The code is open, so you do not have to take our word for it.
02
Sealed to the devices you trust
Your phone makes its own key and never gives it up. The boat locks every report to the screens you have approved, so what passes through our server is a sealed block we cannot open. All we can see is when she last called in.
03
History stays aboard
Her record lives on the boat. When you ask for last season, the question goes through to her and she answers it. We keep no copy of where you have been.
04
No remote access to the vessel
Not for anyone, us included. No support door, no override, no way in. The only thing that reaches her from ashore is a question, and she answers it herself.
05
Pairing cuts both ways
Cut it from your account, or from the boat's own screen. Whoever is paired to her is written on that screen, masked to a first letter and a domain, where anyone aboard can read it, which is what matters when she changes hands.
06
You approve, and you cancel
Every pairing is approved on the boat herself. Remove a screen from your account and she stops sealing to it within five minutes; what that phone already fetched stays on it. A device you no longer trust is answered by pairing her again aboard, which replaces what she trusts without leaving her offline.
Pricing
Free on the boat. Pay only to look from ashore.
The plugin and the local dashboard are free, forever, and work with no internet at all. A membership is only for watching remotely.
Aboard
Free/ forever
The plugin, the recorder and the built-in dashboard, running on the vessel.
- Full local dashboard
- Works with no internet
- Read it with your own tools
- Yours to keep
Remote
€360/ year, per boat
Watching her from ashore, billed once a year. One payment covers a year, it renews until you cancel, and it is taken here on the site rather than inside an app. You open an account first, and the payment page is on it.
- Everything in Aboard
- Live view from anywhere
- Her history and passages, on demand
- Sealed to the devices you pair
- Watch her from the iPhone app, or any browser at siparu.app/app
- One boat per membership
Fleet
Let's talk/ from two boats
A charter operator, a management company, an owner with a few boats. From the second boat the question is who is allowed to look, not what it costs. We would rather answer that first.
- Everything in Remote, on every boat
- One account for the whole fleet
- Priced with you, not from a table
- Still sealed: we cannot read your boats either
- Aboard is free and unlimited, and always will be.
- Remote is €360 a year, for one boat. A second boat takes a second membership, and for now its own account. The membership is the account's, not the hull's: sell her, unpair her, and the place is free for the next boat.
- The iPhone app opens on a demo boat, no account needed, so you can look before you install anything.
- No monthly plan, and no trial that quietly starts billing you.
- She answers from aboard. Her history and passages are read from the boat itself, so while she is switched off or offline the live view and the history both wait, apart from what your phone already fetched, which it keeps and dates.
- Siparu does not call you. There is no alarm and no notification; it is a screen you open.
- The uplink from the boat is roughly 30 MB an hour under way with a full table of gauges, and about 1 MB an hour at rest. Fewer gauges, less.
- No cookies, no advertising, nothing sold on. What you pay for is a server that carries your boat's position without being able to open it.
- Remote is billed in euro, and only in euro. If your card is held in another currency, your own bank does the conversion, at its rate, not ours.
- VAT included where it applies, and the first thirty days are refundable in full.
Come aboard
and see her.
The plugin is on npm today: install it and her own dashboard runs, free, forever. Watching from ashore is a membership, €360 a year for one boat, bought here on the site.
Live on npm · the on-board half is free · Remote is €360 a year, bought hereContact
Ask us something. A person answers.
A question about your setup, an install that will not go, or whether any of this is worth your time. An address and what you want to say; the rest is optional. Mail reaches the same people at support@siparu.app, and the support page says what to put in it.