Credits

Last updated October 19, 2026

Data

• Nautical charts, sea floor and tide predictions: NOAA Office of Coast Survey, NOAA NCEI and NOAA CO-OPS. U.S. Government works, public domain. Reference only, not for navigation.
• Sea surface temperature: NASA GIBS, serving the JPL MUR analysis. JPL MUR MEaSUREs Project (2015), GHRSST Level 4 MUR Global Foundation Sea Surface Temperature Analysis v4.1, NASA PO.DAAC, doi:10.5067/GHGMR-4FJ04.
• Weather data by Open-Meteo.com, CC BY 4.0.
• Launch points and structure in the app's trip plans: © OpenStreetMap contributors, ODbL 1.0.

Leaflet

The charts on this site are drawn with Leaflet, BSD 2-Clause License.

Copyright (c) 2010-2026, Volodymyr Agafonkin
Copyright (c) 2010-2011, CloudMade
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

SFC Mackerel

Set in SFC Mackerel, copyright Skilline Fonts Co., designed by Muhammad Bagus Prasetyo. The typeface is licensed to SeaWolf for this website and the app; it is not open source, and the font files served here may not be copied, modified or used elsewhere.

In the app

The iOS app's crash reporting uses sentry-cocoa, MIT License, copyright (c) 2015 Sentry. Its notice is in the app under Settings → Data Sources → Open-source acknowledgements, with the data credits above.