What is a chock on a ship?

2 : a heavy metal casting (as on the bow or stern of a ship) with two short horn-shaped arms curving inward between which ropes or hawsers may pass for mooring or towing. chock. adverb. Definition of chock (Entry 2 of 3) : as close or as completely as possible.

In this regard, what is a Panama chock?

Panama chocks Fountom mooring chock is used to guide the mooring ropes for ships and vessels. Normally it was made of cast iron or cast steel or stainless steel. The Panama chock is tested according both to I.M.O. and O.C.I.M.F. requirements.

Subsequently, question is, what is Panama lead on ship? A non-roller type fairlead mounted at the ship's side and enclosed so that mooring lines may be led to shore with equal facility either above or below the horizontal.

Accordingly, what is open chock?

Feature Description. UMC's Open Chocks are sold as cast with no surface paint or finish to maintain quick, easy and safe weld-ability to the deck of any barge or workboat. Application. Open Chocks are primarily designed for guiding line or wire onto or around another deck fitting.

What is a bollard on a ship?

A bollard is a sturdy, short, vertical post. The term originally referred to a post on a ship or quay used principally for mooring boats, but is now also used to refer to posts installed to control road traffic and posts designed to prevent ram-raiding and vehicle-ramming attacks.

27 Related Question Answers Found

What is a fairlead on a sailboat?

A fairlead is a device to guide a line, rope or cable around an object, out of the way or to stop it from moving laterally. Typically a fairlead will be a ring or hook. The fairlead may be a separate piece of hardware, or it could be a hole in the structure. Fairleads are used on almost every sailboat.

What does it mean to be chock full?

October 7, 2011 at 10:52 pm. My understanding of “chock-full” is that it is of various older english and french origin and refers to things being crammed so tightly together that they cannot budge. The old english word “chokken” coming from the french “choquier”

Is it chalk it up or chock'it up?

The idiom "chock it up" can be correct in instances where it means to insert wedge-shaped blocks or other objects next to something to prevent it from rolling, dropping, or coming loose; but it is not correct—at least not yet—in place of chalk it up in the idiomatic expression "chalk it up to X."

Why are chocks called chocks?

Chocks, the word meaning referred with airport and airlines is actually a wedge-shaped sturdy rubber or wooden block or even a metal structure. These pieces of wood or rubber or metal is usually used to stop or prevent the motion of an aeroplane on ground.

Where do you put wheel chocks?

Wheel chocks must be positioned downhill and below the vehicle's center of gravity. On a downhill grade, position the chocks in front of the front wheels. On an uphill grade, position the chocks behind the rear wheels. On a level grade, position the chocks on the front and back of a single wheel.

What is the deadweight of a ship?

Deadweight tonnage (also known as deadweight; abbreviated to DWT, D.W.T., d.w.t., or dwt) or tons deadweight (DWT) is a measure of how much weight a ship can carry, not its weight, empty or in any degree of load. DWT is the sum of the weights of cargo, fuel, fresh water, ballast water, provisions, passengers, and crew.

What is GRT NRT and DWT?

Deadweight (often abbreviated as DWT for deadweight tonnes) is the displacement at any loaded condition minus the lightship weight. It includes the crew, passengers, cargo, fuel, water, and stores. Like Displacement, it is often expressed in long tons or in metric tons.

What do you call doors on a ship?

Openings in the outside of the ship are ports, not windows. Entrances from one compartment to another are called doors. Openings from one deck to another are called hatches. The handles on the watertight hatch or door are called dogs.

What is meant by gross tonnage of a ship?

Definition: Gross Registered Tonnage (GRT) is the volume of space within the hull and enclosed space above the deck of a merchant ship which are available for cargo, stores, fuel, passengers and crew. Description: Gross Registered Tonnages are actually measurements of cubic capacity.

What is difference between gross tonnage and net tonnage?

Gross tonnage is based on "the moulded volume of all enclosed spaces of the ship" whereas net tonnage is based on "the moulded volume of all cargo spaces of the ship". In addition, a ship's net tonnage is constrained to be no less than 30% of her gross tonnage.

How is tonnage measured?

It is determined by dividing by 100 the contents, in cubic feet, of the vessel's closed-in spaces. A vessel ton is 100 cubic feet. The register of a vessel states both gross and net tonnage.

How do you calculate the volume of a ship?

Gross tonnage is calculated from the formula GT = K₁V, where V is the volume of a ship's enclosed spaces in cubic metres and K₁ is a constant calculated by K₁ = 0.2 + 0.02 log₁₀ V. The measurement is used in assessing harbour dues and canal transit dues for merchant ships.

What is difference between watertight and weathertight?

In other words, “watertight” means prevention from the passage of water in any direction. The vessel's hull, main deck and bulkheads between watertight compartments must be watertight. “Weathertight” means that water cannot penetrate into the vessel.

What is a capstan on a ship?

A capstan is a vertical-axled rotating machine developed for use on sailing ships to multiply the pulling force of seamen when hauling ropes, cables, and hawsers. The principle is similar to that of the windlass, which has a horizontal axle.

How big is a bollard?

These bollards have the heavy-duty strength needed to prevent crashes from inattentive drivers, as well as protect buildings, parking lots, sites and more. Available sizes: Round, 36” tall, 3.5” diameter. Flat, 36” tall, 3.5” diameter.

How do you install bollards?

How to Install Concrete Bollards

Lay out the desired location for the concrete bollard placement and mark the ground at the approximate center point.
Dig a hole using a post hole digger.
Mix the concrete following the manufacturer's printed directions on the bag label.
Insert the concrete bollard into the hole and use a level to hold it plumb.

How does a bollard work?

Bollards are metal posts designed to catch the attention of drivers in order to prevent crashes around designated areas. Commonly composed of steel, bollards provide the physical strength needed to deter unwanted vehicular traffic and keep sites safe.