MuirWave

MuirWave is a native app for iPad, iPhone and Mac for underwater acoustic propagation prediction. Drop a pin anywhere in the world ocean, set your source and receiver geometry, and see how sound travels through the water column — ray paths, transmission loss, depth excess, signal excess, ambient noise floor — computed on-device from textbook acoustic physics and bundled public-domain ocean data. Designed for civilian marine-acoustic work: environmental impact-assessment consultancies, hydrographic and oceanographic survey crews, marine-mammal observers and PAM operators, academic researchers, and technically-inclined commercial and recreational sailors. — Bundled global ocean data — The app ships with full global-coverage data ready to use offline: • GEBCO 2025 sub-ice bathymetry at 5 arc-minute resolution • World Ocean Atlas 2023 climatology at 1° "Compact" resolution (24 depth levels) • Dutkiewicz seabed sediment classification • Halpern shipping-density layer for ambient-noise modelling All of the above is free — no account, no subscription. Open the app, drop a pin, see your prediction. Your projects sync across your devices via iCloud, also free. — MuirWave Live: real-ocean conditions (subscription, 7-day free trial) — Upgrade the climatology to the real ocean. MuirWave Live streams operational HYCOM nowcast/forecast sound-speed profiles, GFS wind, waves and sea state, and depth-resolved ocean currents to your pin — plus downloadable 0.25° regional operating-area packs (24- and 72-depth tiers) so the same high-resolution data works offshore, offline. Annual or monthly; every new subscription starts with a 7-day free trial. — MuirWave Pro: professional deliverables (one-time purchase) — For consultants and survey leads: marine-mammal impact ranges with NMFS-OPR-71 (2024) thresholds, mitigation planning, and clean, un-watermarked PDF deliverables — the formal EIA report, the impact-methodology document, and the brief sheet. Buy once, keep forever. — Open, traceable physics — Every line of the prediction stack is traceable to its public-domain or permissively-licensed source: • Sound speed — Mackenzie 1981 nine-term equation • Absorption — Francois & Garrison 1982 • Bottom loss — Hamilton 1980 • Ambient noise — Wenz 1962 • Propagation theory — Jensen, Kuperman, Porter & Schmidt, "Computational Ocean Acoustics" No GPL or proprietary modelling code is bundled. The full provenance trail is published at muirwave.com/provenance. — Built for the field, on all your Apple devices — • A native interface designed for the dark conditions of shipboard and field use — on the iPad at the rail, the iPhone in your pocket, the Mac at your desk • Works fully offline once installed; no cloud account needed • Live ocean conditions (HYCOM nowcast / forecast) are an optional toggle • Maritime-traditional units (feet, fathoms, nautical miles, DMS lat/lon) are first-class; metric and MGRS are one tap away — Privacy — No analytics, no advertising, no tracking, no account, no personal data. Settings, scenarios, and downloaded packs stay on your device. Terms of Use: https://muirwave.com/terms Privacy Policy: https://muirwave.com/privacy — What's next — Future updates will add marine-mammal hearing-weighting curves (NMFS 2018), additional source models for EIA work, and further export and reporting features. Roadmap and release notes published on muirwave.com.