About Mariner Square Drystack & Marina
Mariner Square Marina Mariner Square is the first marina in Alameda as you enter the Oakland/Alameda Estuary and is comprised of approximately 50 wet slips that range in size from 40 feet to 150 feet in length. With a mixture of recreational and live-aboards, the marina is a small community of boaters that enjoys our convenient location. Amenities Complimentary Parking Restrooms, Showers and Laundry on site Free Wifi Restaurant on premises Electrical hookup at each slip – 30 and 50 amp Water hookup at each slip Individual, lockable dock boxes Pumpout dock

Installations
COORDINATES
37.79126 N, -122.27828 E
Port Information
Téléphone
Berth Sizes
10-20m, 20m+
Profondeur à la marée basse moyenne
2 - 3m
Manœuvrabilité
Good
Channel Marking
Excellent
Overseas Visitor Berths
Yes
Amarrages pour catamarans
Yes
Type de quai
Floating
Style Side To
Yes
Style Stern To
Yes
Tidal Flow
Negligible
Active Winter
Yes
Weather Forecast
Wed
5AM - 9AM
13 May 2026
- W 6 knots increasing to 8 knots.
- 13°C
- Sunny
Wed
9AM - 1PM
13 May 2026
- W 7 knots increasing to 10 knots.
- Increasing from 15 to 18°C
- Calm sea
- UV Index: 8 - Very High
- Sunny
Wed
1PM - 5PM
13 May 2026
- W 9–12 knots. Gusts up to 17 knots.
- 19°C
- W 0.4m at 4s period
- UV Index: 8 - Very High
- Sunny