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Eelgrass-friendly moorings will be tested in Nantucket Harbor next season

An underwater image showing patches of sand within an eelgrass bed
Grey Lady Aerials
Damage to eelgrass from traditional boat moorings can be seen in this aerial photo.

Each fall, moorings in Nantucket Harbor are removed to make way for dredges that comb bay scallops out of the eelgrass. But traditional mooring chains tear up eelgrass, putting the beds and their resident scallop populations in jeopardy.

So Nantucket Land & Water Council has been working with Harbormaster Sheila Lucey on an alternative system.

RJ Turcotte is Waterkeeper for NLWC. He said tackle that floats above the eelgrass has been available for years. However, it’s typically paired with a permanent anchor that might interfere with scallop dredging. So they’re testing a pyramid-style anchor that can be installed in the spring and taken up in the fall.

An underwater image of a boat mooring anchor surrounded by seagrass
RJ Turcotte
Nantucket Land & Water Council's boat mooring, just off First Pier in Monomoy, uses eco-mooring tackle with a Dor-Mor pyramid anchor.

NLWC has already tested the system on its own 17-foot Waterkeeper boat.

"We purposely had our mooring handler put the mooring is a spot of eelgrass," Turcotte explained. "And we’ve been monitoring it now since 2022. So it’s been three full seasons of it doing just fine."

This spring the Council hopes to work with 20 to 25 boat owners to install test moorings that will be monitored throughout the season.

"And then we’ll see how they do for a season," said Turcotte. "We’re going to try to monitor where they are and if there’s any scour."

NLWC is currently fundraising to provide anchors and tackle for the pilot project. It will give the equipment to volunteer boat owners, with boats under 25 feet, who have moorings in eel grass in the lower part of Nantucket Harbor.

Amy is an award-winning journalist who has worked in print and radio since 1991. In 2019 Amy was awarded a reporting fellowship from the Education Writers Association to report on the challenges facing small, independent colleges. Amy has a B.S. in Broadcast Journalism from Syracuse University and an MFA from Vermont State University.