Alaska Maritime Survival and Vessel Stability Simulator USCG Sector Anchorage

Incident Grounding: Frigid Gulf of Alaska Capsizing
Live Metacentric & Swell Dynamics Beaufort Force: 7 (Gale)
Roll: +0.0°
GM: 0.38 m
Capsized (Hull Keel Up)
Quick Presets
Capsize Probability
89.4%
Transverse GM (Stability)
0.38 m
Max Thermal Survival
180 min
Search & Rescue Window
EXHAUSTED
ACTION: SEEK_ELEVATED_HULL_REFUGE
Vessel & Environmental Parameters
Sea State (Beaufort Force) 7
Topsail & Rigging Ice Accretion (Tons) 2.4 tons
Water Temperature (°C) 3.5 °C
Air Temperature (°C) -2.0 °C
Elevated Hull Exposure Height (m above water) 1.2 m
Incident Log & Drift Modeling
[06:31:00 UTC] Fishing vessel capsized in severe swells.
[06:31:05 UTC] Two crew submerged in frigid 3.5°C ocean; thermal window critical.
[06:31:12 UTC] 15yo survivor mounted overturned keel at 1.2m elevation.
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