What is stern construction?
Stern Construction The stern plating is stiffened by cant frames or webs with short cant beams supporting the decks and leading to the adjacent heavy transverse deck beam. Further stiffening of the plating is provided by horizontal stringers extending to the first transverse frame.
What is stern in a ship?
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.
What is a stern frame and its purpose?
The importance of the stern frame lies in the fact that it supports the tailshaft and the rudder of a ship. In older ships, the stern frame was cast and then welded to the ship’s outer-shell plating. It is the usual practice that the stern frame is made at a location away from the shipyard.
In what part of the ship is the stern frame found?
The stern is the back or aft-most part of a ship or boat, technically defined as the area built up over the sternpost, extending upwards from the counter rail to the taffrail. The stern lies opposite the bow, the foremost part of a ship.
What was the poop deck on a ship?
stern deck
We quote verbatim: “The name originates from the French word for stern, la poupe, from Latin puppis. Thus the poop deck is technically a stern deck, which in sailing ships was usually elevated as the roof of the stern or “after” cabin, also known as the “poop cabin”.
What is a raked stern?
A raked stern combines usually with a long overhang bow. Some examples are the Bermuda 40 and Countess 44. Flat. The flat transom can be plain or lovingly shaped like a wineglass or heart. The stern can be slightly raked but more often slightly reversed.
What is the difference between stern and aft?
Stern: The stern is located at the back end of the ship, opposite from the bow. Aft: Aft on a ship means toward the direction of the stern. Port: Port refers to the left side of the ship, when facing forward.
What are the types of rudder?
To broadly categorize conventional rudders, there are two types of ship rudders:
- Spade or Balanced Rudder. A spade rudder is basically a rudder plate that is fixed to the rudder stock only at the top of the rudder.
- Unbalanced Rudders. These rudders have their stocks attached at the forward most point of their span.
What is cant frame in ship?
noun. any of several frames bracketed aft of the transom of a ship and inclined slightly to the fore-and-aft direction. any transverse frame not perpendicular to the fore-and-aft midship line.
What is the front and back of a ship called?
The forward of a ship is just as it sounds: It’s the most forward side, at the front of a cruise ship, facing the bow. The rear of a ship, at the direction of a ship’s stern, is called the aft.
How did pirates poop on ships?
How did Pirates relieve themselves? In most ships there would be a place at the bow ( front end ) of the ship called the head. This was a hole in the floor to squat over. Faeces would fall directly into the sea below.
Where is the poop deck found?
Thus the poop deck is technically a stern deck, which in sailing ships was usually elevated as the roof of the stern or “after” cabin, also known as the “poop cabin”. On sailing ships, the helmsman would steer the craft from the quarterdeck, immediately in front of the poop deck.
Why is the stern of a ship so difficult to build?
The construction of the stern is one of the most difficult tasks during the ship production process. As the cruiser stern overhang may be subjected to large slamming forces, a substantial construction with adequate stiffening is required.
What kind of ship has a transom stern?
Considerable attention is paid to the stern in order to improve flow into and away from the propeller. The cruiser stern ( see Figure 21.1) was for many years the favoured stern type for ocean going ships, but today most of these vessels have a transom stern ( see Figure 21.2).
What is the purpose of a cruiser stern?
The cruiser stern was initially designed only to lower the steering gear below the armor deck. A cruiser stern is characterized by an upward curved profile from the after perpendicular to the main deck or poop.
Which is the backbone of a ship design?
This design can be circulated to various shipyards through tenders and quotations obtained for construction of the ship. Drawing of plans – sheer plan, body plan, half breadth plan. Trials, tests, and certification. The backbone of all ships is the keel which is a longitudinal girder or beam at the bottom of the ship, extending from bow to stern.