What are the maritime terminologies?
General maritime terms
Knots (speed): 1 knot is a speed of 1 nautical mile per hour, or 1.852 kilometres per hour. Nautical miles (nm): A unit of measure for distances at sea. One nautical mile per hour is equal to 1.852 kilometres or 1.151 miles. Navigable waters: A waterway that a vessel can navigate safely.
What is the terminologies used on board ships?
1. What are ship terminologies? Ship terminologies are technical terms used by people in the shipping industry. Common terms include keel, tiller, starboard side, pier, hatch, dock, helm, valve, bow, beam, draft, freeboard, knots, nautical miles and so on.
How do you ensure adequate ship’s stability at all stages of the voyage?
How to maintain a vessel’s stability
- Keep weight low. New equipment added higher up on a vessel, or replacing gear with heavier equipment raises the centre of gravity and reduces the boat’s stability.
- Avoid overloading.
- Keep excess water off.
- Secure the load.
What do you call an opening at the side of superstructure that gives light and ventilation to the living quarters?
Air port. An opening in the side of a ship or a deck house, usually round in shape and fitted with a hinged frame in which a thick glass light is secured. The purpose of the air port is to provide light and ventilation to and vision from the interior.
How do I report an anchor position?
Reporting anchor position
Cardinal Points – Reporting using the points system with starboard divided in 8 points and port side divided in 8 points as well. Example – 2 points on starboard bow or 4 points on port bow. Long stay ,medium stay , short stay.
What is the most important part of the ship?
Propeller:
- It is a mechanical device having blades fitted on a central shaft.
- Engine, shaft and propeller together constitute propulsion unit.
- It is the most important part of the ship without which a ship can’t move.
How do you remember nautical terms?
9 Easy Ways to Remember Port and Starboard
- Know where the names port and starboard come from.
- Learn a port and starboard joke.
- Think how many letters are in each word.
- Count the letter Rs.
- Think about port wine.
- Get a pair of port and starboard socks.
- Think about the alphabet.
- Think about your wedding ring.
What is watertight integrity?
“Watertight integrity” is defined as closures or fittings that prevent the ingress of water to certain compartments. This original watertight integrity may be reduced or destroyed through enemy action, storm damage, collision, stranding, or negligence.
What are the 3 types of equilibrium for ship’s stability?
There are three types of equilibrium conditions that can occur, for a floating ship, depending on the relation between the positions of the centre of gravity and centre of buoyancy.
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Intact Stability of Surface Ships:
- Stable Equilibrium: Study the figure below.
- Neutral Equilibrium:
- Unstable Equilibrium:
How do you maintain watertight integrity?
Ensure all watertight decks and bulkheads are inspected periodically to verify that there are no unprotected openings or improper penetrations that will allow progressive flooding and that closure devices (e.g. watertight doors, duct closures, etc.) are in place and in working order.
What does 3 shackles in the water mean?
Anchor dragging: The anchor is said to be dragging when it is not held seabed. Brought up to three in water / four on deck: When the anchor is dropped and third joining shackle is in water and fourth joining shackle is on windlass (deck).
What does 5 shots mean in yachting?
“We have depth finders on board and charts, so you try and use a minimum ratio of 5 to one, which means 5ft of chain for every foot of water,” he described. “So in 10 ft of water you would let out 50 ft of chain.
What is the strongest part of a ship?
Primary hull bending loads are generally highest near the middle of the ship, and usually very minor past halfway to the bow or stern. being the vertical distance of the center of that section from the neutral axis.
What is the front of a ship called 4 letters?
FRONT PART OF A SHIP Crossword Clue
| Answer | Letters |
|---|---|
| Front part of a ship with 4 Letters | |
| PROW | 4 |
What are the 4 sides of a boat called?
Now let’s learn the words for the front, rear, left and right sides of the boat. The front of a boat is called the bow, while the rear of a boat is called the stern. When looking towards the bow, the left-hand side of the boat is the port side. And starboard is the corresponding word for the right side of a boat.
Is there an easy way to remember port and starboard?
As the steering oar was on the right, boats would be moored on the other side. That’s why the left side is called ‘port’. If you can remember that the starboard means ‘steering side’ and that most people are right-handed, this should help you to know that starboard is on the right.
What are the examples of watertight integrity?
Watertight integrity can be breached through any activity or happening that allows the ingress of water in unwanted areas or compartments of the vessel. Typical examples include: Lack of maintenance to seals, screw threads and other locking devices. Damage caused by collision, grounding or heavy weather.
Why is watertight integrity important?
Weathertight is defined as that in any sea conditions water will not penetrate the ship. To make it simpler, a watertight door can prevent the passage of water in both directions when subjected to a head of water i.e it can withstand water pressure from both sides.
What two 2 condition will exist when a ship is in a stable equilibrium?
Stable Equilibrium:
Study the figure below. A stable equilibrium is achieved when the vertical position of G is lower than the position of the transverse metacentre (M). So, when the ship heels to an angle (say theta- Ɵ), the centre of buoyancy (B) now shifts to B1.
What is GZ in ship stability?
The vessel’s centre of gravity (G) has a distinct effect on the righting lever (GZ) and consequently the ability of a vessel to return to the upright position. The lower the centre of gravity (G), the bigger is the righting lever (GZ).
What is a watertight integrity?
What are the five 5 types of anchor?
Types of Anchors. We have sorted most of the common anchors into five major categories: The Hook, Plough, Fluke, Claw and Scoop.
What does 2 shackles in the water mean?
A shackle is a unit of length and equal to 15 fathoms or 90 feet and is the standard length of a chain . >> In this condition the weight of 2 shackles is able to moor the ship.
What is the weakest part of a ship?
The Weakest Link
The weak link is there as a safety valve. Because it’s the very last link, under normal circumstances it never gets played out at all; you always want to have some chain left on the ship.