Mermaid · the skipper’s first mate
Adriatic and Ionian 2026 · coverage ↓

A first mate for charter week.

It reads the wind, draws the route, stands the anchor watch and keeps the crew’s paperwork straight, from the invite to the last transfer.

iOS · Android · crew on the web
9:41
menu
060 kn
kn
Gusts
navigation
Rain
Waves
Current
Sat061218Sun061218Mon061218
Sat 14:00
ALADIN-HRunfold_more
Sat 00DHMZ ALADIN-HR · CC BY 4.0Mon 23
mapMap
routePlan
airWeather
sailingBoat
Sat · two weeks out

The crew is aboard before the boat is.

One link. Names, diets and the safety briefing land in the crew app before anyone packs a bag.

Invited5
Joined4 of 5
Briefing read3 of 4
Diets publishedvegetarian · no shellfish
Crew roster · Stardust
PSPetra SiebelSkipper
MRMarkus RothBriefing read
EKElena KrügerBriefing read
SBSven BergJoined
LNLukas NeumannInvited
9:41
PSPetra Siebel invited you aboard
You’re joining as Lukas
Stardust · Bavaria C42
Sat 13 → Sat 20 JunMarina Kaštela
PSMREKSBLN
4 have joined · 1 still to land
Name
Lukas
Surname
Neumann
Email
lukas.neumann@
9:41
Before you cast off

Galley board

BreakfastLunchDinner
SAT
SUN
MON
TUE
WED
THU
FRI
At the tableMarkus: vegetarian · Elena: no fish
Today
Kitty
Safety
Week
14ITEMS
Fri · the night before

The shopping list writes itself.

The crew claims meals on a shared board. Recipes scale to everyone aboard, and one shopping list comes out the other end.

Claim a mealone tap
Recipe scaledfor everyone aboard
Shopping list14 items · shared with the crew
Sat 16:00 · at the base

Every scratch on record before you leave the dock.

Photos with time and position, the base checklist zone by zone, two signatures. The deposit argument is over before it starts.

Photos38
Zones9 of 9
Findings1 · gelcoat
Signatures1 of 2
9:41
Starboard hull at the dock during check-in
Check-in · starboard hull
Zone 4 of 9
38
Evidence · photos
Starboard hull
Gelcoat scratch · 12 cm16:02 · 43.55° N 16.35° E · photo 36
Sign here · skipperSigned 16:42 · Ivana (base) · you
Coming with First Mate · Sat 18:10, first evening aboard

“Where are the toilet seacocks on this boat?”

The assistant has read the manual and the schematics of your Bavaria C42. Ask what the base would answer on the phone at midnight.

Mermaid assistant · coming with First Mate
Pick a question. Answers cite the page of the owner’s manual and point at the locker.
Sun 06:30 · coffee in the cockpit

See the wind before you feel it.

Gusts over the real chart, three days ahead, bending around every headland. Scrub the days. Tap the water for a point forecast.

Model hereDHMZ ALADIN-HR · 2 km
Steps3 h · 72 h ahead
Freshness42 min
19kt
gusts · mid-channel · 14 kt mean
Sun 06:00
14 kt · gusting 19 mid-channel
DHMZ ALADIN-HR · CC BY 4.0
2 → 34+ kt
Sun 09:00 · Split → Vis

Fastest, or comfortable for this hull.

1.4 m on the beam is nothing to a ferry and a queasy hour on a 42-footer. The router weighs wind, gusts, wave height and direction against the boat you actually chartered.

Split → Vis · Comfort
17:17
Route ready · ETA Vis
Optimized for comfort on this hull
Distance26.1 NM
Under way5 h 05 m
Least depth11.6 m
Sea · worst leg0.3 m following
Comfort · C429/10
In the lee of Šolta the whole way, flat water until the last mile into Vis.
TonightUvala Stončica · lee of the Jugo
Sun 15:30 · Pakleni otoci

The seabed, in ten-metre detail.

A 10 m grid, isobaths every two metres, and the seabed itself: sand, seagrass, rock, so you can see where the hook belongs. Drag the divider.

Grid10 m
Isobathsevery 2 m · bold 10 m
Bottomsand · seagrass · rock · mud
Isobaths every 2 m on the Mermaid side. Drag the divider
Official chart · generalized
Mermaid · 10 m grid
0–55 m
Drag to compare · hover for depth
Sun 23:40 · Uvala Stončica

Rest. Mermaid is on watch.

Swing circle from chain and depth. A drag wakes you, and every crew phone you share it with.

26 mfrom the anchor now
61 mswing radius · 36 m chain
Holding · 26 m of 61 m
26m
9:41
Kitty balance · Mon
Your position
+€219.33

€99.07 each · you paid €318.40

Settle upSplit: everyone
€594.403 expenses · €99.07 per person
Sven pays You€99.07
Lukas pays You€99.07
Petra pays You€21.20
LEDGER
Mooring · VisSUN · Elena paid · split 6€64.00
Konzum · the big shopSUN · You paid · split 6€318.40
Diesel · Marina KaštelaSUN · Markus paid · split 6€212.00
Today
Kitty
Safety
Week
Orzo with prawns and tomato, cooked in one pan
Mon · Dinner · you cook
Orzo with Prawns and Tomato
Time10 + 30 min
Heat1 burner · at anchor
Written for6 · scaled from 6
Steps0 of 3 steps
1Soften the onion and garlic in olive oil, add the chopped tomatoes and chilli, simmer five minutes.
2Stir in the orzo; simmer uncovered 10–12 minutes, stirring so it does not stick.
3Lay the prawns on top, cover, four minutes. Parsley, lemon, pepper.
At the tableshellfish · Elena: swap halloumi
Mon 19:30 · dinner aboard

You cook. Markus paid. Nobody keeps a spreadsheet.

The cook gets the recipe scaled for six with the allergens in plain words. The kitty gets the receipt in any currency at the ECB rate. Everyone sees their own position. Tap “Expense”.

Week so far€594.40
Your position+€219.33
CurrenciesEUR · any, at ECB rate
Recipes90 · 15 languages
Tue 17:00 · Šolta, north coast

Crews who stayed tell you about this bay.

Charted shelter, draft and seabed read like instruments. Below them, crew signals from skippers who actually stayed: did the anchor hold, how calm was the night, how crowded was it.

Score4.6 · 12 reviews · 9 photos
Anchor held8 of 9 · 6 calm nights
Protection · next 24 hProtected · shelter × forecast
Sourcescharted · crews · base
9:41
Chart of Rogač and Uvala Kašjun on Šolta: isobaths, the harbour inlet and the village roads
4.6
anchor
Uvala Kašjun
N
Charted shelter
Draft3.5 m
LOA18 m
Holdingsand · seagrass
water_drop
Water
restaurant
Restaurant
adjust
Buoys
Protection · next 24 hshelter × forecast
82%Tue 17:00Protected
now+6h+12h+18h+24h
Charted shelter weighed against the wind forecast · ALADIN-HR20
Crew signals12 reviews · 9 photos
Anchor held8 of 9 held
Nights6 calm
Crowdingsome
+6
starstarstarstarstarAnke · Oceanis 46.1anchorSTAYEDJun 9
Held in 28 kt jugo on 35 m of chain, sand patch in the middle. Konoba in Rogač takes the dinghy.
starstarstarstarstarThomasMay 31
Rolly after midnight when the maestral dies. Good sand in the middle, weed towards the south shore.
All 12 reviews
directionsNavigate
bookmark_border
rate_review
outlined_flag
Incident · Stardust · Wed
Base Kaštela
Gelcoat scratch on the starboard quarter, photographed at 11:2111:21
Gelcoat scratch · starboard quarter12 cm · fender lost in the marina · 43.16° N 16.44° E
Reported
you · photo + position
11:22
Base acknowledged
Ivana · Base Kaštela
11:31
Repair booked
polish · 40 min
Sat 08:00
Deposit
wear & tear
unaffected
Wed 11:20 · a fender lost, a scratch

Damage becomes a thread the base can see.

Photo, note, position. One report. The base acknowledges it, books the repair and the check-out file already knows.

Reportphoto · note · GPS
Goes tobase desk · handover file
Works offlinesends when the signal is back
Sat 08:00 · back at the base

Check-out snaps against check-in: same angles, same spots.

Thirty-eight pairs nobody can argue with. Sign, and the deposit decision is on paper before the taxi arrives.

Photo pairs38 of 38
New findings1 · reported Wed
Depositpending signatures
Handover PDFto you · to the base
Check-in photo: starboard hull, Saturday 16:02
Check-in · Sat 16:02
Check-out photo: starboard hull, Saturday 08:04, same angle
reported Wed · thread #14
Check-out · Sat 08:04
Skipper · Base Kaštela
two signatures · one file
Sat 10:00 · airport café

Everyone’s square before heading off.

Seal the kitty. Transfers compute to the cent, statements go out by email, and the crew marks them paid from their phones.

Week€1 284.20 · 23 entries
Per head€214.03
BiggestDiesel · €212.00
Transfers3 · the minimum
€214
Statement · Stardust · 13–20 Jun
Sealed by the skipper
Open ledger · 23 entries. Sealing computes the fewest transfers that make everyone even.
Two ways aboard

Free Skipper, or First Mate.

Every skipper gets the chart, the forecast, the anchor watch on this phone and the crew app. First Mate adds the premium weather bundle, delegated anchor alarms on crew phones, guided photo check-in, the digital logbook, satellite and radar layers and the boat assistant. Pricing at launch.

Mermaid
€0
Free Skipper
Gust forecast over the chartECMWF 9 km
Routing, charts, bay reviewsincluded
Anchor watch on this phoneincluded
Check-in evidence, incidents, handoverincluded
Crew app · kitty · galley board · listevery crew
Mermaid
pricing at launch
First Mate
Everything in Free Skipper, plus
Premium weather bundleALADIN-HR 2 km · ICON-2I 2 km
Weather-aware routing by hullwaves · gusts
Delegated anchor alarmcrew phones wake
Guided photo check-inzone by zone, same angles
Digital logbooktrip · weather · photos
Satellite map · weather radarlayers
Shelter × forecast, full horizonevery bay
Seabed in 10 m detaildepth · bottom
Boat assistant with your manualscoming with First Mate
Start free, upgrade aboard
Coverage · where Mermaid works

Adriatic, Tyrrhenian and Ionian now, the whole Mediterranean in 2027.

Every feature, from the chart and the 10 m seabed to routing, forecasts, bay data and the anchor watch, runs on the areas we have charted ourselves. In 2026 that is the coast of Croatia, Slovenia, Bosnia and Herzegovina, Montenegro and Albania, Italy on both coasts including the Tyrrhenian Sea and Sicily, and the Ionian Islands of Greece from Corfu to Kefalonia. Outside those waters Mermaid is not supported yet.

Coverage plan
Full features · 2026
Croatia · Slovenia · Bosnia and Herzegovina · Montenegro · Albania · Italy, Adriatic and Tyrrhenian coasts and Sicily · Greece, the Ionian Islands
Everywhere else
Not supported yet
Whole Mediterranean
2027
Forecast models in the covered area
ECMWF 9 km free · ALADIN-HR 2 km and ICON-2I 2 km with First Mate
Skippers · iOS and Android

Get Mermaid before the sail.

Charts and forecasts for the Adriatic download on Wi-Fi; the crew joins from a link, no install.

App StoreGoogle Play
Crew · the web app
Scan, type your name, you’re aboard.
Kitty, galley board, shopping list, safety cards and the anchor watch, in 15 languages, offline in the bay.