Where Ava's forecasts, map geometry, tides and hazard rows come from, and what each provider asks us to say. Ava is made by Smart Hatch LLC. Updated 2026-11-02.
Not for navigation
Ava is a planning and briefing aid. It is not a nautical chart and not a navigation aid. Use official charts and pilot every pass by eye.
Tide heights are model output referenced to mean sea level, not chart datum. Open-Meteo's sea-level data is not for coastal navigation.
Reef lines are derived from OpenStreetMap and can be missing or misplaced.
GEBCO depths must not be used for navigation or for any purpose involving safety at sea.
Cyclone awareness rows (GDACS) are automatic and unconfirmed. Official warnings come from the regional centre named in the Daily Brief (RSMC Nadi, Météo-France Polynésie) and, for tsunamis, from PTWC and the national authority.
Boat speeds for a boat Ava has no logs for are estimates, labelled as such.
Weather, waves and climate
Open-Meteo
Forecasts, marine forecasts, sea level and past forecasts (the log's weather fill). Most forecasts are cut from Open-Meteo's open-data files (the same model output its API serves) by Ava's own forecast server; the rest come through Ava's proxy from the Open-Meteo API. In the app the credit "Weather data: Open-Meteo.com", with its link, sits under the plan results and the Daily Brief. Open-Meteo asks for the credit next to any weather data that fills much of the screen; a popup is fine.
IFS, AIFS and WAM models inside Open-Meteo's forecasts; the IFS ENS and AIFS ENS ensemble members, read straight from ECMWF open data, in Ava's ensemble outlook and forecast archive; open-data tropical-cyclone tracks in Ava's cyclone file.
Waves, currents and sea level behind Open-Meteo's marine forecasts.
Copernicus Marine licencefree of charge to 30 Jun 2028
Generated using E.U. Copernicus Marine Service Information; DOI 10.48670/moi-00017 (GLOBAL_ANALYSISFORECAST_WAV_001_027); DOI 10.48670/moi-00016 (GLOBAL_ANALYSISFORECAST_PHY_001_024)
Copernicus Climate Change Service (C3S), ERA5
The "typical conditions" climatology for ocean passages beyond the forecast.
CC BY 4.0
Generated using Copernicus Climate Change Service information (2026). Contains modified Copernicus Climate Change Service information; neither the European Commission nor ECMWF is responsible for any use that may be made of it. Hersbach, H. et al. (2023): ERA5 hourly data on single levels from 1940 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS), DOI 10.24381/cds.adbb2d47
Météo-France
ARPEGE, AROME and MFWAM: one of the three models in the Daily Brief's median.
Licence Ouverte 2.0 (Etalab)
Source: Météo-France, données ouvertes (meteo.data.gouv.fr), Licence Ouverte 2.0; date of last update as served by Open-Meteo.
NOAA / National Weather Service
GFS, GFS-Wave and RTOFS models; the GEFS ensemble members, read straight from NOAA's open data, in Ava's ensemble outlook and forecast archive; airport observations (aviationweather.gov) for checking Ava's forecasts; NHC cyclone feeds; PTWC tsunami feeds; CPC ENSO status.
US Government, public domain
Contains data from NOAA / the National Weather Service, in the public domain. NOAA does not endorse Ava. Official tsunami warnings: tsunami.gov
Environment and Climate Change Canada
The GEPS ensemble members (MSC Datamart) in Ava's ensemble outlook and forecast archive.
ICON model output inside Open-Meteo's open data, where Open-Meteo's "best match" or a later model choice draws on it.
CC BY 4.0 (GeoNutzV)
Datenbasis: Deutscher Wetterdienst, eigene Elemente ergänzt (data basis: DWD, own elements added), dwd.de open data
MET Norway
Locationforecast: the last fallback for wind forecasts when Ava's forecast server and the Open-Meteo API are both unavailable. Answers from it say so in the data ("source": "met.no").
CC BY 4.0 / NLOD 2.0
Weather forecast from the Norwegian Meteorological Institute (api.met.no), licensed under CC BY 4.0
PacIOOS / NOAA WaveWatch III
The last fallback for wave forecasts when Ava's forecast server and the Open-Meteo API are both unavailable. Answers from it say so in the data ("source": "ww3"); it has no tides and no secondary swell, and it reaches about six days ahead.
Free to use and redistribute, no warranty
Wave forecast: NOAA WaveWatch III, run by the Pacific Islands Ocean Observing System (PacIOOS), University of Hawai'i
Hazards
USGS
Earthquake rows (M5.5 and above within 4,000 km in the last 48 hours).
Cyclone awareness data: GDACS (Global Disaster Alert and Coordination System, gdacs.org), European Commission Joint Research Centre and UN OCHA. GDACS alerts are automatic and may require validation; they are not a substitute for official warnings.
Not for decision-making without confirmation from the official authority.
BMKG
The tsunami row in Indonesian waters: BMKG's last 15 earthquakes of magnitude 5 or more, each with its first tsunami-potential call.
BMKG terms of useBMKG named as the data source and shown in the app
Earthquake and tsunami-potential data: Sumber: BMKG (Badan Meteorologi, Klimatologi, dan Geofisika, Indonesia), data.bmkg.go.id. Official tsunami warnings in Indonesia: InaTEWS.
A first estimate from BMKG, not an InaTEWS warning.
Japan Meteorological Agency (JMA)
Tsunami rows near Japan, read from JMA's XML feed and shortened by Ava. Ava is not sold in Japan.
Public Data License 1.0 (compatible with CC BY 4.0)
Source: Japan Meteorological Agency (jma.go.jp), XML feed data.jma.go.jp; edited by Smart Hatch LLC for Ava. Official tsunami warnings in Japan: jma.go.jp/bosai.
Ava repeats JMA's rows; it is never a substitute for JMA's warnings.
Tides and depths
FES2022
Offline tide constituents (when shipped in a region pack).
registrationany purpose, citation required
The FES2022 Tide product was funded by CNES, produced by LEGOS, NOVELTIS and CLS and made freely available by AVISO. CNES, 2024. FES2022 (Finite Element Solution) Tidal model (Version 2024) [Data set]. CNES. doi.org/10.24400/527896/A01-2024.004
Tide heights are not chart datum.
GEBCO
Depth context offshore (shelf edges and seamounts that steepen seas), when shipped.
free, commercial use allowedacknowledgement
GEBCO Compilation Group (2025) GEBCO 2025 Grid (doi:10.5285/37c52e96-24ea-67ce-e063-7086abc05f29)
The GEBCO Grid should NOT be used for navigation or for any other purpose involving safety at sea.
Reefs, coast and places
OpenStreetMap
Coastline, reef, shoal and seamark geometry behind Ava's reef grids, traced legs, Fiji and Tonga places and the global reef-warning cells.
The regulated anchoring zones outlined on French Polynesia maps.
Official texts, copied with DPAM's permission
Zones from the orders of the Council of Ministers of French Polynesia, published in the Journal officiel de la Polynésie française (JOPF), as copied on the DPAM pages (service-public.pf/dpam). Each zone cites its order's number, date and JOPF reference. Only the orders published in the official journal (JOPF) count.
Our copy can be out of date or incomplete. Check the orders before you anchor.
Esri
Satellite imagery in map views (World Imagery).
Esri terms of use
Powered by Esri. Source: Esri, Vantor, Earthstar Geographics, and the GIS User Community. The same credit is shown on every map in the app.
NGA World Port Index
Harbour size, shelter and entry data for ports.
US Government, public domain
Port data: World Port Index, U.S. National Geospatial-Intelligence Agency (msi.nga.mil), public domain.
Not for navigation.
GeoNames
Positions of some places in the region packs. Others come from NGA's GEOnet Names Server (US Government, public domain).
CC BY 4.0
Place data: GeoNames (geonames.org), licensed under CC BY 4.0; positions changed and combined by Ava.
Not for navigation.
Natural Earth
The coarse global land mask used offshore.
public domain
Land mask: Natural Earth (public domain).
timezone-boundary-builder
The world time-zone grid that gives each harbour its local clock.
Confirmed and corrected places, pass rules and notes.
CC BY 4.0, once the Terms of use are in force
Local knowledge contributed by regional editors is credited by their handle. A correction made from a comment is credited "from a user", never by name. Contributions will be licensed under CC BY 4.0 once the Terms of use are in force.
Boat catalogue
Makes and models for identification only. Each record shows its own sources in the app. Ava is not affiliated with any builder.
per record
See the Sources sheet on each catalogue entry.
Software
Lucide icons
The small icons beside headings and fields. Ava ships no code from Lucide, only the shapes of its icons (and a few of its own drawn on the same grid).
ISC licencesome icons derive from Feather, MIT licence
ISC: Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
MIT (Feather): Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Fraunces typeface
The display face on headings: the Ava logotype, the Go, Go with caution and Do not go words, section and card titles. Ava ships the Latin subset of the variable font inside the page (weights 500 to 700, optical sizes 9 to 144); everything informational is set in the device's own typeface.
SIL Open Font License 1.1
Fraunces, Copyright 2018 The Fraunces Project Authors (github.com/undercasetype/Fraunces), licensed under the SIL Open Font License, Version 1.1. The licence text follows; it is also in docs/brand/type/LICENSE-fraunces.txt with the font.
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007 -----------------------------------------------------------
PREAMBLE The goals of the Open Font License (OFL) are to stimulate worldwide development of collaborative font projects, to support the font creation efforts of academic and linguistic communities, and to provide a free and open framework in which fonts may be shared and improved in partnership with others.
The OFL allows the licensed fonts to be used, studied, modified and redistributed freely as long as they are not sold by themselves. The fonts, including any derivative works, can be bundled, embedded, redistributed and/or sold with any software provided that any reserved names are not used by derivative works. The fonts and derivatives, however, cannot be released under any other type of license. The requirement for fonts to remain under this license does not apply to any document created using the fonts or their derivatives.
DEFINITIONS "Font Software" refers to the set of files released by the Copyright Holder(s) under this license and clearly marked as such. This may include source files, build scripts and documentation.
"Reserved Font Name" refers to any names specified as such after the copyright statement(s).
"Original Version" refers to the collection of Font Software components as distributed by the Copyright Holder(s).
"Modified Version" refers to any derivative made by adding to, deleting, or substituting -- in part or in whole -- any of the components of the Original Version, by changing formats or by porting the Font Software to a new environment.
"Author" refers to any designer, engineer, programmer, technical writer or other person who contributed to the Font Software.
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2) Original or Modified Versions of the Font Software may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license. These can be included either as stand-alone text files, human-readable headers or in the appropriate machine-readable metadata fields within text or binary files as long as those fields can be easily viewed by the user.
3) No Modified Version of the Font Software may use the Reserved Font Name(s) unless explicit written permission is granted by the corresponding Copyright Holder. This restriction only applies to the primary font name as presented to the users.
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DISCLAIMER THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.