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The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.

Research Vessel

USNS H. H. HESS (T-AGS 38)

U.S. Official No. 297570

Not yet on Master's Mate

Type

Research Vessel

Flag

USA

Length

163.3 m

Beam

23.2 m

Draft

12.5 m

First reported

Jun 2026

AIS reports

Registered in the United States, USNS H. H. HESS (T-AGS 38) is a 163.3-metre vessel. She's built with a beam of 23.2 m and a 12.5 m draft. Look for U.S. official number 297570. There's a place for USNS H. H. HESS (T-AGS 38) on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.

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Joining the Safety Initiative Network doesn't just put USNS H. H. HESS (T-AGS 38) on the map. It hands you the full bridge:

Anchor Watch

GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.

Worldwide Charts

Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.

Live AIS & Traffic

See every vessel around you in real time. Closest-approach warnings before they matter.

Weather & Routing

GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.

Onboard Cameras

Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.

Systems Monitoring

Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.

Distress Mesh

Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.

Hail Any Captain

A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.

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About USNS H. H. HESS (T-AGS 38)

What kind of vessel is USNS H. H. HESS (T-AGS 38)?

USNS H. H. HESS (T-AGS 38) is a Research Vessel flagged to United States of America.

What is USNS H. H. HESS (T-AGS 38)'s U.S. Official No.?

USNS H. H. HESS (T-AGS 38)'s U.S. Official No. is 297570.

How big is USNS H. H. HESS (T-AGS 38)?

USNS H. H. HESS (T-AGS 38) is about 163.3 m long, 23.2 m on the beam, drawing 12.5 m.

Is USNS H. H. HESS (T-AGS 38) on the Master's Mate Safety Initiative Network?

Not yet. If USNS H. H. HESS (T-AGS 38) is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).