free
Always included · free
Kielwasser
- Record trips · without limit
- Values from the photo
- Anchor watch
- Discover
- Mileage proof
- Export the logbook · always free

Loguna turns photos of your helm station into records of cost and consumption.
Coming soon toiOSAndroid
43°30.4′N 16°26.3′E · SPLIT · 29 SEPT · 05:5243°30.4′N 16°26.3′E · SPLIT29 SEPT · 05:52
Consumption
Example from a season with 18 trips
Not the table but the sentence: what would one knot less have cost? Loguna works it out from your trips and puts it at the top.
Litres per nautical mile at each speed, from tank and engine hours. What is estimated is marked as estimated.
€184 per night comes from 66 receipts and 161 nights. Every number carries its source and can be traced back to the photo.

Cost per night
Example from one season
Place sheet

Depth
4.1 m
Price
≈ €95
Wind
14 kn NW
Example: Vis town harbour
Memories
Coming soon

Licences and records
Example: eleven trips since the SKS
Loguna counts the nautical miles since your SKS from your recorded trips and puts the remainder at the top: 288 nm to go.
Every requirement of the licence with its bar and status. What is already met stands next to it with its proof, such as the licence from your wallet.
Counting starts on the date of your SKS, at sea. Eleven trips count, and you can see which ones.

Season
Example from one season
Pick a station: six moments, six answers.
The problem
5 months
Five months of winter, and it’s all gone: what was it with the impeller? Where is the yard’s invoice? What did you want to check before launching?
With Loguna
Season start with last year’s list, plus what was missing back then.
1 list
every year again, nothing forgotten
Papers, invoices, parts, yard. Everything about the boat in one place.
1 place
instead of folders, emails and the glovebox
Due dates by engine hours, not by gut feeling.
8 to 12 %
lower maintenance costs by condition instead of calendar
The problem
1 photo
In the evening nobody is in the mood to keep a logbook. Three days later nobody knows where you anchored or how much diesel was left.
With Loguna
A photo of the instrument, the values are in the book. No typing, no guessing.
12 values
from one photo: engine hours, tank, voltage, speed
Every sea mile, every bay, every harbour. Automatic, even without signal.
every mile
recorded, never estimated
In the evening at anchor or a week later. The time is asked, never invented.
7 days
later is normal. The book stays clean.
The problem
3 items
What does a night on board really cost? Berth, diesel, dinner ashore. Everyone has an idea, nobody adds it up. And diesel gets dearer every season.
With Loguna
Berth, diesel and restaurant added up, per night and per sea mile.
184 €
is what a night on board really costs. Example from one season.
Litres per hour and per sea mile, from tank and engine hours. One knot less, shown in euros.
1 speed band
the most economical for your boat, from your own trips
Photograph the invoice, amount in the book, source attached.
1 photo
per invoice, never a slip in the glovebox
The problem
5 chats
The crew asks for the photos, friends for the route, the family where you are right now. All scattered across five chats and three phones.
With Loguna
The trip as a page: track, photos, harbours. After the trip, without your home port.
1 link
for everyone who was there or wanted to be
Everyone on board writes into the same book. Every entry shows who made it.
1 book
for the whole crew, not five notes
Bays, harbours and anchorages that suit your draught. With depth, price and wind.
3.600 places
on the Adriatic, with depth and holding
The problem
0 figures
The season is over. What did it cost, per night, per sea mile? What did the boat need, what is due over winter? Without a book it all stays a guess.
With Loguna
Costs per night, per sea mile and per trip, from receipts instead of gut feeling.
1 figure
per night that is right
What the boat needs over winter, as a list for winter storage. Open items carry over to spring.
0 surprises
in spring, because the list is made in autumn
Every service, every repair documented. The boat you sell one day has a history.
every job
with receipt, date and yard
The problem
all trips
A year later: where was the bay with the clear water? Which evening was the one with the dolphins? Paper yellows, photos have no place. Memories need a book.
With Loguna
All trips as tracks on the globe, with harbours, weather and photos. For good.
all trips
on one globe, to spin
Every season as PDF and CSV. Even after cancelling, even without a subscription.
1 PDF
per season, always free
Next season from the places of the last. What was good comes back.
every bay
worth another visit is already on the list
Always included: export always free · data in the EU · web and app · four languages
Pricing
Exporting your data always stays free.
free
Always included · free
Kielwasser
49,99 €
per year, or 4,99 € a month
approx. 15 % less than paying monthly
Up to 3 boats
Klar Schiff
Everything from Kielwasser, plus:
94,99 €
per year, or 9,99 € a month
approx. 20 % less than paying monthly
Several boats
Weitblick
Everything from Klar Schiff, plus:
Prefer to charter? The Törn-Pass comes along for your week on board: 14,99 € for 30 days, no subscription — with a handover report, so nobody argues about the deposit at check-out.
By photo of your helm station: engine hours, tank and bills then sit in the logbook with place and time, with nothing installed on board. Whatever you enter by hand stays marked as such.
You do. Stored in the EU, exportable at any time, and only you grant access, granular and revocable. Export stays free in every state, even after you cancel.
Keeping the logbook costs nothing and has no time limit, and export is always free. The plans and their prices are listed above under Pricing.
We will name a date once it is fixed. Sign up and we will be in touch as soon as your access is ready.

Coming soon toiOSAndroid