ultramarin marine translations
nl Atlantic Intracoastal Waterway   samenhangende binnenwaterweg achter de kust vanuit Norfolk,Virginia, in het noorden, naar de Florida Keys. De enige sluis op een afstand van ca. 2000 kilometer is in het noorden de Great Bridge lock bij mijl 11,5 voor schepen tot 171 m lengte en 23 m breedte met een drempeldiepte van 5,16 m, hefhoogte een meter. De vaarweg bestaat grotendeels uit natuurlijke waterlopen en strandmeren die door doorsteken zijn verbonden. De AIWW wordt zowel door de beroeps- als de pleziervaart gebruikt.
Helemaal in het noorden leidt een alternatieve route door het Dismal Swampkanaal vanuit Chesapeake, mijl 26, naar de baai van Albemerle waar het kanaal bij mijl 65 op de hoofdroute stoot. Dit kanaal werd in de jaren 1793 tot 1805 door een moeras gegraven. Het wordt aan beide einden door een sluis afgesloten.
Ten oosten van Jacksonville, Florida, kruist de AIWW de Saint Johns River. Bij Stuart aan de Oostkust van Florida loopt het Okeechobeekanaal naar Fort Myers aan de westkust.
Atlantic Intracoastal Waterway - Google Earth
de Atlantik-Küstenkanal 2001 km lange Binnenwasserstraße in den Vereinigten Staaten, die küstennah von Norfolk, Virginia nach Key West in Florida verläuft. Auf der gesamten (Haupt-)Strecke gibt es nur eine Schleuse im Norden (Great Bridge Lock, Meile 11,5), 171 m nutzbare Länge, 23 m nutzbare Breite, 5,16 m Drempelhöhe und ca. ein Meter Hubhöhe. Die Wasserstraße, die zum größeren Teil über natürliche Gewässer und Haffs verläuft, die über Durchstiche miteinander verbunden sind, wird sowohl von der Güterschiffahrt als auch der Sportschiffahrt benutzt.
Am Nordende bildet der Dismal Swamp Canal eine 35,5 km lange Alternativroute, die bei Chesapeake (Meile 26) abzweigt, einige Kilometer dem unteren Lauf des Deep Creek folgt, um einem künstlichen Kanal zu folgen, der im Süden wiederum in den Pasquotank River übergeht, der in den Albemerle Sound mündet und bei Meile 65 auf die Hauptstrecke stößt. Der Kanal wurde schon in den Jahren 1793 bis 1805 von Sklaven durch ein ausgedehntes Sumpfgebiet gegraben. Er wird am obereen und unteren Ende durch eine Schleuse abgeschlossen.

Östlich von Jacksonville, Florida, kreuzt der AIWW den Saint Johns River. Bei Stuart, an der Ostküste von Florida, zweigt der Okeechobee-Kanal vom AIWW ab, der nach 248 km über den Okeechobeesee zur Westküste bei Fort Myers führt.
Atlantic Intracoastal Waterway a 1243-statute-mile network of canals, inlets, bays and rivers that runs the length of the Eastern Seaboard from Norfolk, Virginia, to the Florida Keys. It provides navigable routes for commercial barges and light water-borne pleasure craft. The waterway has only one lock: the Great Bridge Lock at the junction of the Elizabeth River and the Albemarle and Chesapeake Canal (AIWW mile 11.5) is 600 ft long (530 ft usable),75 ft wide (72 ft usable),16 ft over the sills, and has a lift of 2.7 ft.
An alternative route for boating is offered by the Dismal Swamp Canal. Work on the 22-mile canal was started in 1793. Dug by slaves through the marshes it opened in 1805. In the north it joins the AIWW at mile 26 using the lower reach of Deep Creek. In the south it connects to the Pasquotank River which flows into the Albemerle Sound to join the AIWW at mile 65. The trench of the canal is closed off from the natural watercourses by a lock at Deep Creek, VA, and South Mills, NC.
East of Jacksonville the AIWW crosses the Saint Johns River. Further south at Stuart it connects to the Okeechobee Waterway.
fr Atlantic Intracoastal Waterway  
Atlantic Intracoastal Waterway at Emerald Isle, North Carolina
photo: Shorewood Real Estate

The Atlantic Intracoastal Waterway (AIWW) is a the toll-free “canal” which affords continuous protected passage behind the Atlantic Coast and the Florida Keys for more than 1,243 statute miles between Norfolk, VA, and Key West, FL. Shortly after Norfolk, the waterway bifurcates and offers 2 alternative routes: Route 1, the basic route, follows Albemarle and Chesapeake Canal to Albemarle Sound; Route 2, the alternate route, is through Great Dismal Swamp Canal to the sound.

The Intracoastal Waterway is used by commercial light-draft vessels and tows unable to navigate long stretches in the open ocean, and by pleasure craft. Small-boat and recreation facilities are found along the waterway. Supervision of the waterway ’s construction, maintenance, and operation is divided among five U.S.Army Engineer Districts (Norfolk,Wilmington,Charleston,Savannah,and Jacksonville).

The Intracoastal Waterway mileage is zeroed in 36 °50.9'N., 76 °17.9'W., off the foot of West Main Street, Norfolk, VA, and progresses southward to I.W. Mile 1243.8 at Key West, FL, in 24 °33.7'N.,81 °48.5'W. Distances along the Intracoastal Waterway are in statute miles to facilitate reference to the small-craft charts; all other distances are nautical miles.

The Federal project for the Intracoastal Waterway via Albemarle and Chesapeake Canal provides for a least depth of 12 feet from Norfolk, VA, (I.W.Mile 0.0) to Fort Pierce, FL, (I.W.Mile 965.6), thence 10 feet to Miami, FL, (I.W.Mile 1089.0), and thence 7 feet to Key
West, FL, (I.W.Mile 1243.8). The Miami to Key West section of the waterway has been completed only as far as Cross Bank (I.W.Mile 1152.5); the remainder has been deferred for restudy. Although no work has been performed on this section of the waterway, a channel, marked in accordance with I.W. markings, leads from Cross Bank to Big Pine Key along the northwesterly side of the Florida Keys. At Big Pine Key, the waterway bifurcates going north through Florida Bay or souththrough Hawk Channel to Key West. The channel has a controlling depth of about 5 feet and is exposed to winds from the northwest.(See Local Notice to Mariners and latest editions of charts for controlling depths of the Intracoastal Waterway.)

The minimum overhead clearance of fixed bridges over the Intracoastal Waterway is 56 feet at the Julia Tuttle Causeway at Miami, Mile 1087.1, but most fixed bridges have a clearance of 65 feet.
The minimum clearance of overhead cables crossing the Intracoastal Waterway is 68 feet in Snows Cut, Mile 295.8 . An overhead cable car at Mile 356.4 has a least clearance of 67 feet under the low point of travel of the cabin.
Caution: When running with a fair tide or in windy weather, exercise caution when approaching and passing bridges and sharp turns.
No vessel owner or operator shall signal a drawbridge to open if the vertical clearance is sufficient to allow the vessel, after all lowerable nonstructural vessel appurtenances that are not essential to navigation have been lowered, to safely pass under the drawbridge in the closed position; or signal a drawbridge to open for any purpose other than to pass through the drawbridge opening.


The operator of each vessel requesting a drawbridge to open shall signal the drawtender and the drawtender shall acknowledge that signal. The signal shall be repeated until acknowledged in some manner by the drawtender before proceeding.
The signals used to request the opening of the draw and to acknowledge that request shall be sound signals, visual signals, or radiotelephone communications.

Great Bridge Lock (mile 11.5)is the only lock on the Intracoastal Waterway between Norfolk and Key West via Albemarle and Chesapeake Canal. It is 600 feet long (530 usable),75 feet wide (72 feet usable),16 feet over the sills,and has a lift of 2.7 feet.

Aids to navigation
Intracoastal Waterway aids have characteristic yellow markings which distinguish them from aids to navigation marking other waters.
Lights and daybeacons should not be passed close aboard because those marking dredged channels are usually placed back from the bottom edge of the channel and others may have rip-rap mounds around them to protect the structures.

Navigation of the Intracoastal Waterway can be made easier by use of the special small-craft series which the National Ocean Service publishes.
Charts #: From North to South, 12206, 11553, 11541, 11534, 11518, 11507, 11489, 11485, 11472, 11467, 11451, 11445, 11446, 11448.

Under ordinary conditions the mean range of tide in the waterway is from nontidal to about 7 feet. In many sections, the tide depends on the force and direction of the wind.

The Intracoastal Waterway affords protection from the winds and waves of the offshore Atlantic. Land creates friction that reduces windspeeds by as much as 30 percent of those over the open sea. Wave heights are reduced by shallow depths and limited fetch. When severeweather does strike,shelter is usually close by,either up a protected river or at a nearby port. However,navi gation becomes more critical in many restricted reaches along this route, so that weather, as well as tides and currents, is important. The waterway is covered by a network of National Weather Service VHF-FM radio stations that provide continuously updated forecasts and warnings.

Small-craft facilities
There are many small-craft facilities along the Intracoastal Waterway.

Navigation on the waterways requires a knowledge of the channel conditions and other factors restricting navigation.

Cross currents
Where two streams cross,the current will have a greater velocity in the deeper channel. This is noticeable along the Intracoastal Waterway where it follows a dredged canal cutting across a winding stream. Cross currents will also be noticed where either an inlet from the ocean or a drainage canal enters the waterway. Cross currents are especially strong at New River Inlet and Bogue Inlet, N.C. Failure to allow for cross currents when passing these and other inlets is the cause of many rescue calls to the Coast Guard.

Bends or Curves
In the Intracoastal and adjoining waterways there are many sharp bends which are dangerous to vessels meeting or passing. On approaching a bend, a vessel should reduce speed sufficiently to be able to stop within half the distance to a ship coming from the opposite direction. Under no circumstances should a vessel attempt to overtake and pass another at a bend.

Stumps and sunken logs
Reports are frequently made that vessels have struck shoals or rocks in rivers which have later proved to be stumps or sunken logs.Mariners are warned against navigating too close to the banks of streams where submerged stumps are known or may be expected to exist.

Hurricane moorings
On receiving advisory notice of a tropical disturbance small boats should seek shelter in a small winding stream whose banks are lined with trees,preferably cedar or mangrove. Moor with bow and stern lines fastened to the lower branches;if possible snug up with good chafing gear.The knees of the trees will act as fenders and the branches,having more give than the trunks,will ease the shocks of the heavy gusts.If the banks are lined only with small trees or large shrubs, use clumps of them within each hawser loop. Keep clear of any tall pines as they generally have shallow roots and are more apt to be blown down.

A clear channel shall at all times be left open to permit free and unobstructed navigation by all types of vessels and rafts that normally use the various waterways or sections thereof.
Stoppage in waterway, anchorage or mooring.

No vessels or rafts shall anchor or moor in any of the land cuts or other narrow parts of the waterway, except in case of an emergency. Whenever it becomes necessary for a vessel or raft to stop in any such portions of the waterway it shall be securely fastened to one bank and as close to the bank as possible. This shall be done only at such a place and under such conditions as will not obstruct or prevent the passage of other vessels or craft. Stoppages shall be only for such periods as may be necessary.

When tied up, all vessels must be moored by bow and stern lines, to insure their not being drawn away from the bank by winds,currents or the suction of passing vessels.In narrow sections,no vessel or raft shall be tied abreast of another.

No vessel, regardless of size, shall anchor in a dredged channel or narrow portion of a waterway for the purpose of fishing, if navigation is obstructed, thereby.

Vessels shall proceed at a speed which will not endanger other vessels or structures and will not interfere with any work in progress incident to maintaining, improving, surveying or marking the channel.

Official signs indicating limited speeds through critical portions of the waterways shall be strictly obeyed. Vessels approaching and passing through a bridge shall so govern their speed as to insure passage through the bridge without damage to the bridge or its fenders.
No vessel or tow shall navigate through a drawbridge until the movable span is fully opened.

Meeting and passing

Vessels, on meeting or overtaking, shall give the proper signals and pass in accordance with the Navigation Rules. All vessels approaching dredges, or other plant engaged on improvements to a waterway, shall give the signal for passing and slow down sufficiently to stop if so ordered or if no answering signal is received.

On receiving the answering signal, they shall then proceed to a pass at a speed sufficiently slow to insure safe navigation.