

Best for beginner divers, 6-11m, boat entry.
Great Egg Rock is a reef and drop-off site located off Cape Ann. The site features depths ranging from 6 to 11 metres, with an average depth of 9 metres, making it suitable for beginner divers. Visibility typically ranges between 5 and 10 metres. Access is by boat only, and divers should remain vigilant for active boat traffic when surfacing. Water temperatures are cold, fluctuating between 5 and 17 degrees Celsius throughout the year. Divers must wear appropriate thermal protection, such as a 7mm wetsuit, hood, and gloves, to mitigate the risks associated with cold water conditions.
42.56397, -70.73698
The main hull of the Alice M. Colburn shipwreck is reportedly located on the southwest corner of the rock.
Boat access is provided by charters such as Cape Ann Diver II.
Recorded at this site
Depth
6-11m
Visibility
5-10m
Skill Level
Beginner
Entry
Boat
Boat required
Water Temp
5-17°C
Current
None
Yes, the site is suitable for beginner divers as it offers a manageable depth range of 6 to 11 metres and generally lacks strong currents.
The site features depths between 6 and 11 metres, with an average depth of 9 metres.
Access to Great Egg Rock is by boat only. The site is located approximately 1207 metres from the shore.
The main hazards are cold water temperatures and active boat traffic. Divers should wear adequate thermal protection and use surface markers when surfacing.
Diving at Great Egg Rock in Manchester-by-the-Sea requires the following certifications: Open Water. Always dive within your training limits.
A drysuit recommended is recommended for diving at Great Egg Rock in Manchester-by-the-Sea. Water temperatures range from 5°C to 17°C.
Visibility at Great Egg Rock in Manchester-by-the-Sea typically ranges from 5 metres to 10 metres. Conditions vary with weather, tides, and seasons.