Information about Boston, MAFor the first-time cruising visitor, Boston Harbor and approaches might seem intimidating. This is one of America's busiest ports with ships, tugs, barges, commercial fishing boats plying the waters at all times. But if you stick to the channels it's a fairly easy and boater-friendly place to navigate. And the city offers world-class cuisine, iconic sites for the history buff (sail by the USS Constitution, for instance), theater, shops, and museums, and much more, all within reach of your anchorage.
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The port of Boston has excellent facilities for making all types of hull and engine repairs to vessels of all sizes. Several of these firms operate waterfront facilities for the vessels of all sizes. In addition, there are a number of firms without waterfront facilities that are engaged in marine repair work. These companies maintain shops and portable equipment for making repairs on all types of craft at their berths.
Public float landings for small craft are at Summer Street, Northern Avenue, on Charles River, and several other places along the waterfront. Small-craft facilities at Boston and Charlestown can provide berths with electricity, water, ice, marine supplies, wet storage, and sewage pump-out; complete hull, engine, and electronic repairs are available.
The Jeffries Yacht Club is in the cove adjacent westward of Logan International Airport. A boatyard, close southwestward of the yacht club, has a marine railway that can handle vessels up to 100 tons for hull and engine repairs; a 10-ton crane is also available.
Tides: Mean tidal range is 9.5 feet.
Boston Harbor branches into several distinguishable areas. Chelsea is separated from Charlestown, on the western side of the harbor, by the Mystic River. Charlestown is separated from Boston proper by the Charles River. Charleston Navy Yard is located on the north side of the mouth of the Charles River and is home to the USS Constitution and USS Cassin Young.
South Boston is on the peninsula southeast of the city proper, from which it is separated by Fort Point Channel. Logan International Airport is between Governors Island Flats and East Boston. The airport area, almost entirely filled land, is low, flat and quite extensive. The airport control tower is conspicuous. Governors Island, on the northeast side of Boston Main Channel and at the southerly end of the airport, is a low grass-covered peninsula.
Castle Island, on the southwest side of Boston Main Channel 1 mile northwestward of Spectacle Island, is marked by Fort Independence. It is connected to the shore westward by filled land. Several boulders bare at low water are a short distance southeastward of Castle Island. This area should be avoided. On the northeast corner of the island is the 52-foot granite Donald McKay Monument, erected in 1933 to commemorate the famous East Boston builder of clipper ships.
Pleasure Bay, just westward of Castle Island, is closed by an earth-filled dam extending from the southern end of the island to the jetty light southeastward of City Point.
Reserved Channel, 0.5 mile northwestward of Castle Island, is a dredged unmarked channel that leads westward from the Boston Main Channel for about 1 mile. The channel has a depth of 40 feet to about 0.5 mile above the entrance, thence 28 feet to the head of the project. A fixed bridge near the head of the dredged channel has reported clearances of 40 feet (horizontal) and 6 feet (vertical).
Fort Point Channel separates Boston proper from South Boston. A dredged channel leads from the entrance to the Summer Street Bridge. The controlling depth is 11 feet to the Northern Avenue Bridge and 14-15 feet to the Summer Street Bridge. Using the chart, Fort Point Channel is navigable to just below Dorchester Avenue Bridge.
The navigable section of Fort Point Channel is crossed by four bridges. Northern Avenue Bridge, at the entrance, has a swing span with a clearance of 7 feet. Moakley bridge, a highway bridge just above the Northern Avenue bridge, has a fixed span with a clearance of 16 feet. The Congress Street Bridge has a fixed span with a clearance of 6 feet, and the Summer Street Bridge has a fixed span with a clearance of 8 feet.
Charles River, on the western side of the harbor between Boston proper and Charlestown, is the approach by water to Cambridge and Watertown. The entrance of the river to the Charlestown Bridge, the first bridge, has a controlling depth of 26 feet. A wreck, covered 29 feet, is near the middle of the entrance and an obstruction, covered 13 feet, is near the southern limit of the channel, 240 yards east of the bridge.
Charles River Dam is about 0.55 mile above the entrance to the river. The dam has three locks; the large north lock has a usable length of 300 feet and width of 40 feet with 14 feet over the sill; the other two locks have usable lengths of 200 feet with widths of 25 feet and 6 feet over the sills. An overhead walkway with a monorail beneath it across the downstream end of the locks has a least clearance of 26 feet. A second dam is about 1 mile above the entrance with a single lock that’s maintained in the open position. The controlling depth between the two dams is 15 feet.
Charles River above the dams is maintained at a height of 7.2 feet above mean low water. There is a average depth of 15 feet to Arsenal Street Bridge, thence 3 feet for 2 miles to the head of navigation at Galen Street Bridge in Watertown.
The river above the dams is used by many yachts and small craft. No toll is charged for passage through the locks. There are four yacht clubs on the river, some college sailing and rowing clubs, a large marina below the dams and two public float landings above the dams.
The Charlestown Bridge crosses the river just below the lower Charles River Dam and has a fixed span with a clearance of 23 feet. Use the south span. The Interstate 93 highway bridge about 100 yards upstream of the lower dam has a fixed span with a clearance of 48 feet due to an overhead pipeline being suspended from below the bridge.
Little Mystic Channel is a slip about 0.5 mile long 0.2 mile south-southeast of the mouth of the Mystic River at Charlestown. Midchannel depths above the 35-foot dredged berth range from 29 feet just east of the highway bridge to 17 feet 600 yards westward of the bridge. The fixed highway bridge over the channel has a clearance of 9 feet. The horizontal clearance in the channel is limited to 75 feet due to the remains of the approaches of the former Chelsea Street Bridge immediately downstream.
Chelsea River, locally known as Chelsea Creek, emptying into Boston Harbor from eastward between East Boston and Chelsea, is the approach to important wharves and facilities, and to the city of Revere at the head, 2.6 miles above the entrance. The average minimum mid-channel depth is 31 feet.
Two drawbridges cross the river. The Andrew P. McArdle Bridge, just above the mouth, has a bascule span with a clearance of 20 feet, and the Chelsea Street Bridge, 0.8 mile upstream, has a bascule span with a clearance of 9 feet. In the open position, the bascule span of the Chelsea Street Bridge overhangs the channel above a height of 83 feet. The bridgetender of these bridges monitor VHF-FM channel 16 and work on channel 13.
Chelsea River has a heavy traffic of deep-draft oil tankers. The tankers berth at the oil company terminals and storage areas on both banks of the river.
Mystic River, which empties into Boston Harbor opposite Chelsea River, is the approach by water to the towns of Medford and Malden.
The Massachusetts Bay Transportation Authority (MBTA) railroad bridge, just upstream from the Malden River entrance, has a fixed span with a vertical clearance of 30 feet above normal pool level. The Wellington Bridge, 2.2 miles above the mouth, has a bascule span with a clearance of 16 feet at normal pool level. The Harvard Street Bridge (General Lawrence Bridge), 3.3 miles above the mouth, has a bascule span with a clearance of 13 feet at normal pool level. The Wellington and Harvard Street Bridges are maintained in the closed position. Highway 93 bridge about 0.5 mile above the General Lawrence Bridge has a fixed span with a clearance of 16 feet at normal pool level. Note: Normal pool level is 6.2 feet above mean low water.
A large marina is on the north bank of the river, just westward of the Boston and Maine Railroad bridge. Gasoline, water, ice, marine supplies, storage facilities, a small-craft launching ramp, and a 15-ton mobile hoist are available; hull, engine, and electronic repairs can be made.
There are two yacht clubs on the river above the mouth of the Malden River: the Winter Hill at Somerville and the Riverside at Medford. The Chelsea Yacht Club is on the north bank on the east side of the Mystic River-Tobin Memorial Bridge. Gasoline, diesel fuel, water, and electricity are available at the floats, which have 30 feet alongside.
NOAA charts 13272 (1:10,000), 13270 (1:25,000) and 13267 (1:80,000). CharKit Region 2, pages 49 and 50
Boston Harbor, the largest seaport in New England, includes all the tidewater lying within a line from the southern extremity of Deer Island to Point Allerton, about 4 miles to the southeastward.
- Boston Lighted Whistle Buoy B (42¬∞22’42″N., 70¬∞46’58″W.) is about 7.8 miles east northeastward of Deer Island. The buoy is equipped with a fog signal and racon.
- Conspicuous to a vessel approaching Boston Harbor from northeastward is the tall red, white, and blue standpipe on Winthrop Head.
- From eastward, the most prominent island in the entrance is Great Brewster.
- On the south side of the entrance, a turreted tower is conspicuous on Point Allerton; also prominent are the tank and standpipe on Strawberry Hill. Two miles south of Point Allerton are two radio towers that are illuminated at night.
- The outstanding landmarks in the city of Boston are the John Hancock Building, the Prudential Building, the bridge over Mystic River, the control tower at Logan International Airport, the pointed tower of the customhouse, and a large gas tank in Everett. Also prominent are the John F. Kennedy Federal Building in Boston and a spire at Squantum.
Although there are numerous hazards adjacent to the approaches to the harbor, the approaches are marked by a number of powerful lights, and the principal dangers are buoyed. The northeastern approach is obstructed by islands and shoals that extend 4 miles from the entrance; between them are the dredged channels which lead into the harbor. In the southeastern approach, broken ground extends as much as 3 miles from shore.
- For those unfamiliar with the area it’s recommend you enter either the Boston North Channel or the South Channel to Presidents Roads, which leads to the entrance to Boston Harbor. Stick to the channels to avoid the numerous hazards outside the buoys.
- At night use the North Channel, which has lighted buoys. If you’re headed for Boston Harbor proceed via Presidents Roads, be watchful for other vessels, as this is a busy area.
- Boston Main Channel extends along the southern side of President Roads to the mouths of the Chelsea and Mystic Rivers, and to Charlestown Bridge on the Charles River.
- There is 40-foot channel from President Roads to the mouth of the Mystic River.
- The right half of the channel from President Roads to Commonwealth Pier 5, South Boston, and the left half of the channel just northwest of Commonwealth Pier 5 to the Charles River has a depth of 35 feet.
- The waters adjacent to the piers and wharves extending northeastward northward from Northern Avenue Bridge to and including Pier 4 along the Boston proper waterfront westward of the Boston Main Channel are non-navigable because of the redevelopment of this section of the waterfront. Uncharted hazards or dangers may exist in these waters. Strangers are advised to seek local knowledge before entering, and all mariners are advised to exercise caution in the area.
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