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  2. 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 ...

  3. Emergency tow vessel - Wikipedia

    en.wikipedia.org/wiki/Emergency_tow_vessel

    Don Inda Class - 2 sister ETV's based on Ulstein's UT 722 L design (bollard pull of 228 t.) Luz de Mar Class - 2 sister ETV's (bollard pull of 128 t.) Alonso de Chaves - (bollard pull of 105 t.) Punta Salinas - (bollard pull of 97 t.) Punta Mayor - (bollard pull of 81 t.) María de Maeztu Class - 7 sister ETV's (bollard pull of 60 t.)

  4. Safeguard-class rescue and salvage ship - Wikipedia

    en.wikipedia.org/wiki/Safeguard-class_rescue_and...

    Safeguard ' s propulsion machinery provides a bollard pull (towing force at zero speed and full power) of 68 tons. [6] [7] The centerpiece of Safeguard ' s towing capability is an Almon A. Johnson Series 322 double-drum automatic towing machine.

  5. Anchor handling tug supply vessel - Wikipedia

    en.wikipedia.org/wiki/Anchor_handling_tug_supply...

    The reference load used in the design and testing of the towing winch is twice the static bollard pull. Even if AHTS-vessels are customized for anchor-handling and towing, they can also undertake, for example, ROV (remotely operated underwater vehicle) services, safety/rescue services, and supply duties between mainland and offshore installations.

  6. USNS Safeguard - Wikipedia

    en.wikipedia.org/wiki/USNS_Safeguard

    Safeguard ' s propulsion machinery provides a bollard pull (towing force at zero speed and full power) of 68 tons. [8] [9] The centerpiece of Safeguard ' s towing capability is an Almon A. Johnson Series 322 double-drum automatic towing machine.

  7. USNS Grasp - Wikipedia

    en.wikipedia.org/wiki/USNS_Grasp

    Grasp's propulsion machinery provides a bollard pull (towing force at zero speed and full power) of 68 tons. [11] [12] The centerpiece of Grasp ' s towing capability is an Almon A. Johnson Series 322 double-drum automatic towing machine.

  8. USNS Grapple - Wikipedia

    en.wikipedia.org/wiki/USNS_Grapple

    Grapple's propulsion machinery provides a bollard pull (towing force at zero speed and full power) of 68 tons. [5] [6] The centerpiece of Grapple's towing capability is an Almon A. Johnson Series 322 double-drum automatic towing machine. Each drum carries 3,000 feet (910 m) of 2.25-inch-diameter (57 mm) drawn galvanized, 6×37 right-hand lay ...

  9. Tugboat - Wikipedia

    en.wikipedia.org/wiki/Tugboat

    A tugboat is typically rated by its engine's power output and its overall bollard pull. The largest commercial harbour tugboats in the 2000s–2010s, used for towing container ships or similar, had around 60 to 65 short tons-force (530–580 kN) of bollard pull, which is described as 15 short tons-force (130 kN) above "normal" tugboats. [5] [6]

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