DEADWOOD

DEADWOOD

a thick beam, which is attached at one end to the stern of the ship, at the other to the bow, for fastening the stems with the keel, and constituting a continuation of the resin keel.

Dictionary of foreign words included in the Russian language. - Chudinov A.N., 1910 .

Deadwood

(English deadwood) mor.

1) stern tube - a metal pipe through which the propeller shaft comes out;

2) the aft end of the vessel in the underwater part, through which the stern tube passes.

New dictionary foreign words.- by EdwART,, 2009 .

Deadwood

[English deadwood] - pestilence. 1) a metal pipe that encloses the end of the propeller shaft; 2) the aft end of the vessel in the underwater part between the keel and the rudder; 3) fastening bars between the keel and the bow and stern ends of the ship on wooden ships

Large dictionary of foreign words. - Publishing House "IDDK", 2007 .

Deadwood

(de), A, m. (English deadwood letters dead tree).
mor. A metal pipe through which the propeller shaft comes out, as well as the aft end of the ship in the underwater part where this pipe is placed.

Explanatory dictionary of foreign words by L. P. Krysin. - M: Russian language, 1998 .

Synonyms:

See what "DEADWOOD" is in other dictionaries:

- (Dead wood) the stern end of the ship in its underwater part, in which the middle propeller shafts exit to the outside. If the shape of the sternpost is such that its keel part is cut at an angle to the waterline, then the ship is said to have a cut... ... Nautical Dictionary

- (English deadwood lit. dead tree), the aft underwater part of the vessel at the junction of the keel with the sternpost. The propeller shaft is brought out through a metal pipe into the daywood... Big Encyclopedic Dictionary

Male, Marine a thick beam, one to the stern, the other to the bow, for securing the stems (risers, rams) with the keel. Dahl's Explanatory Dictionary. V.I. Dahl. 1863 1866 … Dahl's Explanatory Dictionary

Noun, number of synonyms: 1 pipe (93) ASIS Dictionary of Synonyms. V.N. Trishin. 2013… Dictionary of synonyms

- (English deadwood, literally dead tree), the aft underwater part of the vessel at the junction of the keel and the sternpost. The propeller shaft is brought out through a metal pipe in the daywood. * * * DEADWOOD DEADWOOD (English deadwood, lit. dead tree),… … Encyclopedic Dictionary

- (English deadwood) the underwater part of the bow and stern points of the vessel at the junction of the keel with the stem (See stem) and sternpost (See sternpost). In the stern deck of single-rotor ships there is a waterproof metal... Great Soviet Encyclopedia

One of the main elements of the shafting line is the stern tube device, the general arrangement of which for a twin-screw vessel is shown in Fig. 87. The stern tube device includes: a cast steel stern tube 7, the bow flange of which is attached to a welded ring 9 installed on the bulkhead 8, and the aft end is fixed in the mortar 5 and secured with a nut 4; bow and stern bronze bushings (not shown in the figure); stern tube (or propeller) shaft 6, oil seal 10 and oil seal pressure sleeve 11. The figure also shows: the propeller and propeller shaft, bracket 2, necessary for supporting and centering the propeller shaft, ring 1 and bronze bushing 3 of the bracket.

Rice. 87. Location of the stern tube device.

Thus, the stern tube device is an independent unit designed to ensure the correct location of the end section of the shafting line (stern tube and propeller shafts) and the watertightness of the vessel in its narrowest aft part. The design of a stern tube device widely used on ships is shown in Fig. 88, a. The bow flange of the stern tube 8 is attached by a flange 10 on studs to a steel weld 9 on the aft watertight bulkhead.

At the aft end of the pipe there is an annular protrusion 6, with which it rests against the end of the sternpost (or mortar) 5 and is secured externally with a nut 3 with a locking strip 4. Bronze bushings 7, pressed inside the pipe from its bow and stern ends, are the stern tube (or propeller) bearings ) shaft. The stern sleeve is attached with flange 2 using countersunk screws to the end of the stern tube; both bushings rest against its inner shoulders. Anti-friction liners 1 are mounted inside the bushings, made from strips that were previously made from hard wood - backauta *. Currently, instead of expensive backout, liners made of wood-laminated plastic - lignofol (item 3, Fig. 88.6), made of textolite or special rubber-metal strips 4 (Fig. 88, c) made of waterproof hard rubber, fixed in the sleeve with screws are used 5. The length of the strips, depending on the size of the sleeve, is 80-400 mm, width 60-80 mm and thickness 15-25 mm. Planks 2 have beveled edges and are secured with special metal (most often brass) inserts (item 2, Fig. 88, a, c). A gap of no more than 4.0-6.0 mm is left between the slats and the propeller shaft, through which sea water flows freely into the stern tube, serving as a lubricant for the stern tube bearings.

Rice. 88. Design of the stern tube device (a) and stern tube bushings (b, c).

The flow of water into the vessel is prevented by the gland 11, which has a special gland packing. Sometimes on small displacement ships they use stern tube bushings filled with babbitt (white metal). In this case, oil lubrication of the stern tube bearings and installation of a special seal (for example, the “Simplex” type) are required to ensure oil and water tightness of the bow end of the stern tube.

* Backout is an evergreen tree with very strong and resinous wood, heavier than water; grows only in South America.

When buying a boat motor, one of its most important parameters, which you must first decide on, is the length of its deadwood (“legs”, “boots”). To determine it, it is necessary to measure the distance from the top of the mounting bracket to the bottom of the cavitation plate. The result obtained should be equal to the height of the stern transom (plus or minus 24mm). When planing, the boat is completely above the water to the bottom edge of the transom.

What deadwood motor is needed for my boat, short, long or ultra long?

Outboard motors of the same power can have different deadwood lengths (often called “boot” or “leg”). How can you determine which engine, short, long or ultra long, is needed for your boat? Take the boat out of the water, set it up on a solid surface and measure from the top of the transom (the transom of the boat is where the outboard motor is mounted) to the bottom of the boat. You should end up with approximately 367mm, 490mm or 612mm. This corresponds to short, long or ultra long deadwood.

When buying a boat motor, one of its most important parameters, which you must first decide on, is the length of its deadwood (“legs”, “boots”).

How to independently measure the length of the deadwood of a boat motor? To determine it, it is necessary to measure the distance from the top of the mounting bracket to the bottom of the cavitation plate. The result obtained should be equal to the height of the stern transom (plus or minus 24mm). When planing, the boat is completely above the water to the bottom edge of the transom. In this case, the motor is also above the water to the lower edge of the cavitation plate, thus the rotating propeller of the outboard motor is not exposed and is constantly in the water.

Here are a number of questions that most often arise when choosing the deadwood length of an outboard motor.

Q. Can I use a long shaft outboard motor on a boat that is designed for a short shaft outboard motor?

A. Yes, it will operate normally, but there will be more resistance to movement and a loss of power and speed. Keep in mind that you will not be able to swim in shallow water with such a motor.

Q. My boat has an adjustable transom, can I mount a short shaft outboard motor on it?

A. Yes, but be sure to check that your boat's transom can accommodate the motor. correct position, and also that it is convenient for you to manage it.

Q. It seems to me that the boat is pulled too far to the side while moving or the propeller of the outboard motor is often exposed. Does this mean I chose the wrong deadwood length?

A. Perhaps. This should not happen, even if you are on the open sea and the wave height is quite high. This may also mean that the trim angle is not selected correctly. It needs to be checked first before doing anything.

Q. Is it possible to convert a short shaft outboard motor into a long shaft outboard motor and vice versa?

A. While some outboard motors can be converted fairly easily, others are quite difficult to convert. In any case (if you have a set of parts for conversion), it is easier to convert a short deadwood into a long one than a long one into a short one.

So, when choosing an outboard motor with a short, long or ultra-long deadwood, you must measure the height of the boat's transom to determine which motor with which deadwood you need (the height of the boat's transom is also indicated in its passport). Keep in mind that the cavitation plate of the outboard motor must be flush with the bottom of the boat. The permissible deviation is about 24 mm, but it is better if its value is minimal. If you are still unsure about the required sternwood length, contact the boat manufacturer.

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Meaning of deadwood

deadwood in the crossword dictionary

Explanatory Dictionary of the Living Great Russian Language, Dal Vladimir

deadwood

m. Morsk. a thick beam, one to the stern, the other to the bow, for securing the stems (risers, rams) with the keel.

Encyclopedic Dictionary, 1998

deadwood

DEADWOOD (English deadwood, lit. - dead tree) the aft underwater part of the vessel at the junction of the keel with the sternpost. The propeller shaft is brought out through a metal pipe into the daywood.

Deadwood

(eng. deadwood), the underwater part of the bow and stern points of the vessel at the junction of the keel with the stem and sternpost. In the stern propeller of single-screw ships, a waterproof metal pipe (stern tube) is installed, through which the propeller shaft is brought out. The area of ​​the lateral projection and the shape of the ship, especially the stern one, affect the controllability of the vessel.

Examples of the use of the word deadwood in literature.

They were already getting out into the open water when the boat hit its stern hard on a rock, and if it weren’t for the chief sergeant, it would have remained stuck on the rocks: the rudders jammed, and through deadwood the right shaft, water began to quickly flow into the engine room.

Deadwoods, as well as the keel beam, which protrudes below the bottom, help the ship stay on course.

Let's go out and stretch our bones, otherwise you'll probably deadwood It's already numb and the shaft won't turn.