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2. Split-charge diode - Wikipedia

   en.wikipedia.org/wiki/Split-charge_diode

   The device prevents current from flowing from one battery to another while enabling the batteries to be continuously connected. While the original devices used diodes to charge the two batteries, while keeping them separate from each other, most devices now use other configurations in order to avoid the 0.7V drop which reduces efficiency and ...

3. Single buoy mooring - Wikipedia

   en.wikipedia.org/wiki/Single_buoy_mooring

   The anchor chains are pre-tensioned to ensure that the buoy is held in position above the PLEM. As the load from the tanker is applied, the heavy chains on the far side straighten and lift off the seabed to apply the balancing load. Under full design load there is still some 27 metres (89 ft) of chain lying on the bottom.

4. Anchor windlass - Wikipedia

   en.wikipedia.org/wiki/Anchor_windlass

   The anchor is shackled to the anchor cable (US anchor chain), the cable passes up through the hawsepipe, through the pawl, over the windlass gypsy (US wildcat) down through the "spurling pipe" to the chain/cable locker under the forecastle (or poop if at the stern (US fantail)) - the anchor bitts are on a bulkhead in the cable locker and the bitter end of the cable is connected to the bitts ...

5. Cable ferry - Wikipedia

   en.wikipedia.org/wiki/Cable_ferry

   The reaction ferry uses the power of the river to tack across the current; the powered cable ferry uses engines or electric motors (e.g., the Canby Ferry in the U.S. State of Oregon) to wind itself across; or is hand-operated, such as the Stratford-upon-Avon chain ferry in the UK and the Saugatuck Chain Ferry in Saugatuck, Michigan, United States.

6. Anchor - Wikipedia

   en.wikipedia.org/wiki/Anchor

   The weight of the anchor chain can be more than that of the anchor and is critical to proper holding. Permanent moorings use large masses (commonly a block or slab of concrete) resting on the seabed. Semi-permanent mooring anchors (such as mushroom anchors ) and large ship's anchors derive a significant portion of their holding power from their ...

7. Shackle (disambiguation) - Wikipedia

   en.wikipedia.org/wiki/Shackle_(disambiguation)

   Certain restraint devices, such as handcuffs, legcuffs or thumbcuffs; As part of a land vehicle, a shackle is a link connecting a leaf spring to the frame; A nautical unit used for measuring the lengths of the cables and chains (especially anchor chains), equal to 15 fathoms, 90 feet or 27.432 meters.