DeckVaktThe app
Everything DeckVakt does
Four things matter on passage: who is on deck, waking them, telling them when to call you, and writing it down. All of that runs on the phones. The rest are the small tools a passage needs — and a desk, if you want a wide screen and the extra numbers, not because you have to.
{{ heroDial }}
Ship's time
{{ boardClock }}
{{ hubCrew }}
on deck, {{ boardCount }} left
{{ g.label }}
On passage
The core of the app, and the part that has to keep working at 03:10 with no signal and a tired crew. One screen, readable half-asleep, that answers who is on, who is next, and how long is left.
0
bars of signal needed,
at any point in the passage
at any point in the passage
App preview
The rota
Five systems, and the arithmetic behind them
Swedish, four on four off with dog watches, 6-6-4-4-4, staggered pairs, or a custom shape that still adds up to twenty-four hours. The pattern moves daily so nobody owns the graveyard watch.
The board
The whole app once you are at sea
Ship's time large enough to read half-asleep, who is on, who is next, and a countdown to the handover. Red on black from sunset, switched on your position rather than the brightness sensor.
The alarms
Past silent mode, then up the watch
Built to sound through Do Not Disturb, repeat, and escalate to the rest of the watch if nobody answers. A watch alarm that respects silent mode is an alarm that does not exist.
The crew
A code in the saloon, not an account
They scan a code or type something like DECK-4F2, pick their name off your list, and their phone knows when to wake them. No password, no invitation email, and crew never pay.
The desk
Optional: a wide screen and the extra numbers
The whole system already runs on the phones. The desk is convenience — plus fairness, rest hours, sleep debt and system comparison when you want them on the desk. Same file, nothing extra to buy.
Offline
No tower in the middle of an ocean
The rota, the alarms, the board and the log live on the phones that hold them. Sharing needs the same saloon, not the same country, and names stay on the devices.
The record
Written as the watches happen, so nobody types the night twice. The same handovers become a deck log, an MLC-style rest-hours record and a card for every crew member.
47
entries by day three,
none of them typed twice
none of them typed twice
Deck log
Las Palmas → St Lucia · p.4
{{ l.t }}
{{ l.text }}
Signed K. Ellingsen, master
16 Nov 2026
Hours of rest · day 3
The same watches, drawn the way a surveyor reads them
One row per crew member, one cell per hour. Filled is on watch, pale is rest. The MLC minimum is ten hours in twenty-four, and the app will not let a rota quietly break it.
{{ r.name }}
{{ r.summary }}
00
06
12
18
24
Passage log
Written from the watches you actually stood
Handovers, acknowledgements, sights and fixes, dated as they happen. A deck log as a PDF at the end.
Read the deck log ›
Hours of rest
Per person, per day, ready for a surveyor
The same rota as an MLC-style rest-hours record, per person, per day. What a surveyor or a delivery client asks for.
How the record works ›
Passage summary
Miles, night hours and sights, totalled
Miles, watches stood, night hours, sights taken. One card each for the crew who just crossed an ocean.
Safety
The parts that decide whether a tired watch calls you at all. Thresholds written as numbers before you leave, and a card each so nobody is guessing at their job in the dark.
5
standing orders, on
every watch's board
every watch's board
Ana Reit
Briefing card
Your watches
04:00–08:00
19:00–24:00
{{ b.k }}
{{ b.v }}
Print one per crew member before departure · Las Palmas → St Lucia
Call me if
Numbers, so nobody has to decide whether it counts
Written once in the saloon, shown on every watch's board until you change them. A crew member who is unsure whether to wake you will not wake you.
{{ o.n }}
{{ o.text }}
{{ o.val }}
Standing orders
Thresholds as numbers, not judgement calls
Wind above, visibility below, any vessel inside — written once, shown on every watch's board until you change them.
Read the guide ›
Briefing cards
One per person, and they print
Generated per person: your watches, your man-overboard job, your lifejacket and tether. Printable before departure.
Man overboard ›
Anchor watch
An alarm that admits what it costs
Drift ring and alarm, with honest labelling of what keeping the GPS awake costs the battery.
Anchor watch ›
Before you go
The week before you leave, when the decisions are still cheap to change. Try a watch system against your actual crew, and find out what eighteen days of it costs in water and diesel.
10
days projected, per
crew member, before you sail
crew member, before you sail
Sleep debt · Swedish system, day 10
Who this rota is quietly grinding down
Hours of sleep owed after ten days, per crew member. Flip to another system and the bars redraw before you have committed anyone to it.
{{ d.name }}
{{ d.val }}
Anything over three hours is where judgement starts to go.
Provisioning · 6 crew, 18 days
What a trade wind crossing actually weighs
{{ s.k }}
{{ s.v }}
Margins already in: three spare days of water and food, and a third of the fuel held back for the approach.
Fatigue simulator
Try a system before you commit the crew
Flip between systems and see ten days of projected sleep debt for every crew member.
Crew fatigue ›
Provisioning
Crew and days in, stores out
Crew, days and conditions into water, food, gas and diesel, with the margins already in.
Passage planning ›
Lock screen
Glanceable, and still offline
The countdown to your watch on the lock screen, updating on the phone with no signal at all.
Every feature is included
DeckVakt is free for skippers and crew. Payment never unlocks a feature. After a real passage, the app asks gently whether it earned support; saying not now keeps everything working.
Planning and testing
Unlimited
Generate rotas, scan QR codes, test alarms and make practice logs for as long as you need. Testing never counts as a passage.
Every real passage
Free
The deliberate Start passage action turns on live ship’s time and real alarms. Every export, record and navigation tool remains included.
Optional support
Your choice
£3.99, £12.99 or £39.99 one-time contributions in the mobile apps. No subscription, no entitlement and no locked feature.
Finish the passage first
After you arrive, the passage summary asks whether DeckVakt earned its place aboard. Support it, say not now, or never pay at all. The rota, alarms, log and exports behave exactly the same.
The app is in development for the App Store and Google Play. How optional support works.
Join the waitlist
Every passage and every export is free. The whole system is usable on the phones; the desk app is extra. We will tell you when it is ready.
Join the waitlist