Stern
In nautical, the stern (fig. butt) of a vessel, is the rear end of its structure, where the rudder is placed and formerly there were the cameras or main rooms. (Fr. Poupe; Eng. Stern; It. Poppa).
By extension, the rear of a ship is also called stern, considering it divided into three equal parts counting from the prow.
Etymology
The stern is figuratively called ass.
Description
Like the bow and in order to avoid eddies and loss of energy, this part of the ship is also tuned.
| Spanish | English | Description |
|---|---|---|
| Coronation | Taffrail (Taffarel) | It's the highest part of the popa. |
| Mirror (Spit, Spark) | Transom | It's the flat end. codaste that forms with the last Cuaderna. |
| Bovedilla superior (Friso) | Upper Counter | It is the arched geometric line that extends from the yogo of the Second deck Al chicken that ends in the windows of the Low (this almost has no bow). |
| Bovedilla bottom | Lower Counter | It is the arched geometric line that extends from the yoke of the cross until Second Deck |
| Gambotas | Stern timbers | |
| Peto (Abanico) | Stern frame | It consists of codaste, fins and and. |
| Codaste | Stern post | It's the vertical piece that comes up from Nozzle until the beginning of mirror. |
| Fins (Brazales, Brazaletes) | Fashion pieces | |
| Yugos | Transoms | |
| Cochinatas | Sleepers | Diagonal materials that reinforce inside and. They should not be confused with Bulárcamas also called cochinata. |
| Whiskers (Horn timbers, Fan Thai timbers) | ||
| Robots | Side support structures when the propellers They're not in line of crispy, | |
| Widths | helm ports | Axis support propeller. |
| Propeller(s) | Propeller | They are the propulsor(s) component of the boat. |
| Timon | Rudder | It is the mechanical orientation plane for the direction of a boat. |
| Cucharros | Hood | Healing of the helmet from the water line until tape to one side and another codaste. |
| Spanish | English | Description |
|---|---|---|
| Powder Overk Curve | Sternson | |
| Coral curve |
Types
| Spanish | English |
|---|---|
| Popa | Stern |
| Mirror (Space, Llana) | Transom (Square) |
| Redonda | Circular |
| Elliptical | Elliptical (Counter, Cutaway, Fantail, Merchant) |
| From cruise | Cruiser |
| Torpedo (Bote torpedo) | Torpedo (Torpedo-boat) |
Mirror Stern
The flat surface of any mirrored stern of a vessel can start at the water line or above it.
| Spanish | English | Description |
|---|---|---|
| Popa | Stern | |
| (Lanzada) | Reverse (Sugar-scoop, Retroussé) | He's a guy. mirror stern that is inclined backwards. It's common in yachts modern, rare in vessels before the centuryXX.. |
| Barco rocket | Rocket ship | It's a recess pop Extremely tilted. |
| Vertical Mirror (Table) | Vertical transom (Plumb) | It does not bend, falls directly from the coronation until yoke of the cross. |
| of Costanzi | Costanzi | Designed for vessels of the sea. It's a commitment between stern shaped spoon and the mirror, allows to azimutal thrusters (eye. Queen Mary 2, was also proposed for the SS Oceanic and Eugenio C of the 1960s). |
Round stern
The mirror stern was an easy target for enemy guns, as sight guns could not be attached to it. to defend against weight.
In 1817, the naval architect Sir Robert Seppings to solve the weight problem introduced the round stern.
Elliptical stern
The round stern was considered by many to be ugly (no American warship was designed with that type of stern) and was quickly superseded by the elliptical stern.
In 1820, the United States began building the first warship with an elliptical stern, a decade before the British. The USS Brandywine became the first sail ship to boast such stern.
Sir William Symonds rectified the round stern design. He introduced a set of straight timbers that extend diagonally from the head of the bow stern upwards until reaching a same height (forming a kind of fan) but with their lengths decreasing as they close the circumference and the ellipse is formed.
Just as the gambotas of a mirror stern rest on the yoke of the cross, the gambotas of an elliptical stern rest on the straight timbers.
The elliptical stern began to be used in the age of sailing, but remained very popular for merchant ships and warships well into the steam nautical age and through the first 8 decades of steamboat building (between 1840 and 1920), even though the design left the >rudder exposed and vulnerable in combat situations.
Stern Cruiser
The circular sterns and elliptical sterns were a great improvement over the stern mirrored, but exposed the rudder, this problem was improved by the cruising stern (of iron or steel helmet).
The cruising stern protected the rudder by putting it below the deck shielding. The slant now became a point, no longer a flat or curved panel. The cove, now, reached from the codaste to the crowning in a continuous arc.
Soon, it was discovered that warships with cruiser sterns experienced less water resistance than those with elliptical stern, and between World War I and World War II, most merchant ship designs i> followed this trend.
Torpedo Stern (Torpedo Boat Stern)
Describes a type of stern with a rounded bottom that is almost flat at the waterline, but then tapers upwards to the deck (practical shape for high speed powerboats in very shallow currents).
Popa launched from a Liberty vessel.
Cruise ship of a transatlantic vessel.
Round pop of a wooden boat.
