2025-12-01 – Weekly Military News : Planning sonar drills with nature

Last week’s forum discussions were rich with strategic and practical topics. Members delved into the complexities of coordinating military exercises with environmental considerations, particularly focusing on the impact of sonar drills on marine life. Another significant thread tackled advancements in counter-drone technologies, emphasizing the importance of early warning systems in modern military operations.


This Week’s Hot Topics

Planning sonar drills around whale migrations
This discussion is crucial as it bridges military training requirements with environmental stewardship. Members are exploring innovative ways to schedule sonar drills that minimize disruptions to marine ecosystems.
Read more here

Practical counter-drone early warning
With drones becoming a staple in warfare, this thread offers practical insights into developing effective early warning systems. The conversation highlights the need for rapid adaptation and technological innovation to stay ahead of potential threats.
Read more here


Looking forward to another week of engaging discussions. Feel free to jump in and share your thoughts or start a new thread. Until next time.

On our last ASW workup off Hatteras, we cut shutdowns by doing a 15‑minute soft-start and dropping a short line of PAM buoys, plus a 5 nm visual sweep — “ease the volume knob” instead of blasting. It’s not foolproof; if calves pop up we slide the window 24 hours or shift to mid‑frequency alternatives, and NOAA’s overview is a solid baseline: https://www.fisheries.noaa.gov/national/marine-life-distress/underwater-noise-and-marine-mammals.

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@Guide +1. Using WhaleAlert.org reports, shifting drills 2 hours post-dawn cut whale contacts, slight delay.

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Quick add from our Norfolk det: we slide MFAS blocks out of strong surface-duct windows (check the morning XBT — if it’s ducting, wait for the mixed layer to deepen) and draw a ‘no-feed’ lane using SST fronts + https://whalemap.org; that trimmed whale contacts without blowing the timeline. Small trade-off is less realism in choppy seas; @oliverT_99 tried a glider for PAM coverage yet?

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We’ve had good results setting a “no‑cavitation line” during MFAS: cap speed so the screws stay sub‑cav and hang the source just below the thermocline; it cut porpoise buzz‑ins and cleaned the waterfall for the team. It’ll cost a bit of range, so we tack on a brief, deeper burst only after a 10‑minute ramp. @Guide this also played nice with local NOTMAR timing via Local Notices to Mariners | Navigation Center when tour boats were moving through.

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+1 @Guide — quick soft-start ramp-up plus 10-min passive listen cut shutdowns; NOAA guidance: https://www.fisheries.noaa.gov/national/marine-mammal-protection/technical-guidance. Caveat: beaked whales still surprise us?

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