Free Water Pillar Top View CAD Block – DWG, DXF, PDF Format

In the maritime contexts in which the term originates, a bollard is either a wooden or iron post found as a deck-fitting on a ship or boat, and used to secure ropes for towing, mooring and other purposes; or its counterpart on land, a short wooden, iron or stone post on a quayside to which craft can be moored. The Sailor's Word-Book of 1867 defines a bollard in a more specific context as "a thick piece of wood on the head of a whale-boat, round which the harpooner gives the line a turn, in order to veer it steadily, and check the animal's velocity". Mooring bollards are seldom exactly cylindrical, but typically have a larger diameter near the top to discourage mooring warps (docklines) from coming loose. Single bollards sometimes include a cross rod to allow the mooring lines to be bent into a figure eight. Small mushroom-bollards are found on lock approaches for advancing boats waiting for lock access. A conventional measure of the pulling or towing power of a watercraft is known as bollard pull, and is defined as the force exerted by a vessel under full power on a shore-mounted bollard through a tow-line.

You need more Technical, Electrical, HVAC, and Plumbing DWG and AutoCAD Drawings? Check the Technical Category. Access our entire CAD blocks and DWG drawings on our homepage. For free 3D files, visit Freepolygon. Need free vector illustrations? Check out Vectorfreefiles. Stay updated with the latest design news and insights at Designrecap. Explore a global directory of design professionals and firms at Meshegg. Explore more resources for architecture students and professionals at Archiskills.