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  2. Pusher (boat) - Wikipedia

    en.wikipedia.org/wiki/Pusher_(boat)

    Larger boats can run this segment of the river with the maximum tow size of 42 barges southbound and 40+ northbound. A typical River tow might be 35 to 42 barges, each about 200 feet (61 m) long by 35 feet (11 m) wide, configured in a rectangular shape 6 to 7 barges long and 5 to 6 barges wide, depending on the number of barges in tow.

  3. Tugboat - Wikipedia

    en.wikipedia.org/wiki/Tugboat

    A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, such as in crowded harbors or narrow canals, [1] or cannot move at all, such as barges, disabled ships, log ...

  4. Salvage tug - Wikipedia

    en.wikipedia.org/wiki/Salvage_tug

    French salvage tug Abeille Bourbon which also serves as an emergency tow vessel (ETV) USNS Grapple Example of modern naval rescue and salvage ship. A salvage tug, also known historically as a wrecking tug, is a specialized type of tugboat that is used to rescue ships that are in distress or in danger of sinking, or to salvage ships that have already sunk or run aground.

  5. Marquette Transportation Company - Wikipedia

    en.wikipedia.org/wiki/Marquette_Transportation...

    In 1990's Marquette changed from a barge operator to a line-haul towboat company then later started leasing its barges to its towing customers. Today Marquette's River unit operates more than 50 line-haul vessels and over 800 dry cargo barges. [5]

  6. Bollard pull - Wikipedia

    en.wikipedia.org/wiki/Bollard_pull

    Bollard pull is a conventional measure of the pulling (or towing) power of a watercraft.It is defined as the force (usually in tonnes-force or kilonewtons (kN)) exerted by a vessel under full power, on a shore-mounted bollard through a tow-line, commonly measured in a practical test (but sometimes simulated) under test conditions that include calm water, no tide, level trim, and sufficient ...

  7. Day shapes - Wikipedia

    en.wikipedia.org/wiki/Day_shapes

    3. Vessel towing Diamond Tow > 200 m 3. Vessel being towed Diamond Tow > 200 m 4,11. Fishing (with restricted maneuvrability) 2 cones (apexes together) > 20 m (extra cone: gear extending more than 150 metres in that direction) 5. Not under command 2 balls (vert. line) > 12 m 6. Minesweeping 3 balls 7,10. Restricted in ability to manoeuvre

  8. Emergency tow vessel - Wikipedia

    en.wikipedia.org/wiki/Emergency_tow_vessel

    An emergency tow vessel, also called emergency towing vessel, (ETV) is a multi purpose boat used by state authorities to tow disabled vessels on high seas in order to prevent dangers to man and environment.

  9. Towpath - Wikipedia

    en.wikipedia.org/wiki/Towpath

    It pulled trains of two and four boats at 7 mph (11 km/h), and experiments were also tried with eight boats. The canal's engineer, G. R. Webb, produced a report on the expected costs of laying rails along the towpaths, but nothing more was heard of the project, [ 8 ] and the advent of steam and diesel powered boats offered a much simpler solution.

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