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Map of USS Amesbury / Alexander's Wreck
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Boat entry

USS Amesbury / Alexander's Wreck

Florida, United States
Open Water suggested3–8 m (10–25 ft) depthBoat entryRash guard or 2mm shorty typical

Boat dive — see Entry & access.

USS Amesbury / Alexander's Wreck at a glance

USS Amesbury / Alexander's Wreck is a boat dive site in Florida, United States with depths of 3–7.6 m (10–25 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see sponges and encrusting growth and Reef fish. Recent reports put the water around 27°C (81°F). Check the latest conditions and entry details before you go.

Moderate window now· until 16:00, then favorable & moderate until 19:00 · sunset 18:52

Forecast for this hour · 13:00 · run 11 h ago
1.4 m (4.7 ft)waves — about a meter and a half expected (waves — about five feet expected)

Tap a factor for its source and model point · Forecast 27°C · seasonal avg 29°C ( · Forecast 81°F · seasonal avg 84°F)

Site hazards: Boat traffic, variable visibility, current/weather exposure, sharp wreck metal, debris entanglement, and protected sanctuary resources. Avoid penetration and do not remove artifacts.

Read the full hazards ↓

Dive windows this week

Lightest wind: Sun
Mon8:00–16:00 moderate, 16:00–18:00 favorable, 18:00–19:00 moderate

1.4 m waves · 20 kn wind (4.6 ft waves · 20 kn wind)

Tue8:00–9:00 favorable, 9:00–12:00 moderate, 12:00–19:00 favorable

1.4 m waves · 17 kn wind (4.5 ft waves · 17 kn wind)

Wed8:00–11:00 moderate, 11:00–19:00 favorable

0.9 m waves · 15 kn wind (3.0 ft waves · 15 kn wind)

Thu8:00–19:00 favorable

0.6 m waves · 10 kn wind (2.0 ft waves · 10 kn wind)

Fri8:00–19:00 favorable

0.4 m waves · 10 kn wind (1.3 ft waves · 10 kn wind)

Sat8:00–19:00 favorable

0.3 m waves · 8 kn wind (0.9 ft waves · 8 kn wind)

Sun8:00–19:00 favorable

0.2 m waves · 4 kn wind (0.7 ft waves · 4 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 7:08 · Sunrise 7:31 · Sunset 18:52 · some windows run past sunset

Source: Open-Meteo marine · model point 6.1 km from site · updated 26 Oct, 01:28 GMT-4

Forecast only — always assess conditions on site.

Compare this weekend’s windows near USS Amesbury / Alexander's Wreck

Forecast · NOAA tide model

Tide & slack timing

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Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

What Divers Say

Known for: sponges and encrusting growth, Reef fish
Best time: Best during calm Key West sea conditions with good visibility; avoid strong wind, storms, and rough Gulf/Straits conditions.

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. January, 71% of days have historically been favorable, water has typically been 23°C (74°F), waves have typically been 1.1 m (3.7 ft), wind has typically been 17 knots
  2. February, 79% of days have historically been favorable, water has typically been 24°C (75°F), waves have typically been 1.1 m (3.6 ft), wind has typically been 15 knots
  3. March, 75% of days have historically been favorable, water has typically been 25°C (77°F), waves have typically been 1.1 m (3.4 ft), wind has typically been 16 knots
  4. April, 66% of days have historically been favorable, water has typically been 26°C (79°F), waves have typically been 1.1 m (3.7 ft), wind has typically been 17 knots
  5. May, 96% of days have historically been favorable, water has typically been 29°C (83°F), waves have typically been 0.7 m (2.3 ft), wind has typically been 13 knots
  6. June, 87% of days have historically been favorable, water has typically been 30°C (86°F), waves have typically been 0.8 m (2.5 ft), wind has typically been 14 knots
  7. July, 98% of days have historically been favorable, water has typically been 31°C (87°F), waves have typically been 0.6 m (2.1 ft), wind has typically been 12 knots, historically most favorable
  8. August, 89% of days have historically been favorable, water has typically been 31°C (88°F), waves have typically been 0.7 m (2.3 ft), wind has typically been 13 knots
  9. September, 94% of days have historically been favorable, water has typically been 31°C (87°F), waves have typically been 0.7 m (2.3 ft), wind has typically been 13 knots
  10. October, 65% of days have historically been favorable, water has typically been 29°C (84°F), waves have typically been 1.1 m (3.6 ft), wind has typically been 17 knots
  11. November, 64% of days have historically been favorable, water has typically been 27°C (80°F), waves have typically been 1.2 m (3.9 ft), wind has typically been 17 knots
  12. December, 66% of days have historically been favorable, water has typically been 25°C (77°F), waves have typically been 1.2 m (3.8 ft), wind has typically been 17 knots

July has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life seen at this site

Species noted at this site — not a promise of what you’ll encounter.

Species seen here

Rough labels: “Commonly seen” usually means two or more recorded sightings near this site in public dive logs (GBIF), “Occasionally seen” one; “Seasonal” and “Rarely seen” come from dive-guide research. Not a measured rate.

Fills & rentals nearby

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated July 2026

Site details

USS Amesbury, locally called Alexander's Wreck, is a former U.S. Navy destroyer escort/high-speed transport on the Florida Keys National Marine Sanctuary Shipwreck Trail. The shallow wreck lies in about 25 ft / 7.6 m roughly 5 nautical miles west of Key West. NOAA documents two hull/superstructure sections about 600 ft apart, including recognizable gun mounts and a debris field.

boatwreck

Boat traffic, variable visibility, current/weather exposure, sharp wreck metal, debris entanglement, and protected sanctuary resources. Avoid penetration and do not remove artifacts.

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