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# CRUISER STERN

 A spoon-shaped stern used an most merchant ships designed to give maximum immersed length

## Related Terms

### LENGTH BPP

The length of a vessel along the waterline from the forward surface of the stem, or main bow perpendicular member, to the after surface of the sternpost, or main stern perpendicular member. Believed to give a reasonable idea of the vessel's carrying capacity, as it excludes the small, often unusable volume contained in her overhanging ends.

### LPP

The length of a vessel along the waterline from the forward surface of the stem, or main bow perpendicular member, to the after surface of the sternpost, or main stern perpendicular member. Believed to give a reasonable idea of the vessel's carrying capacity, as it excludes the small, often unusable volume contained in her overhanging ends.

### DE

Displacement extreme - equals to the moulded displacement, plus the displacement of the shell plating, bossings, cruiser stern and all other appendages.

### CUT-AWAY

An angled change in the underwater longitudinal profile of a vessel between the bow and keel or between the stern and keel. Sometimes called cut up.

### MOLDED_DEPTH

The vertical distance from the molded baseline to the top of the freeboard deck beam at side, measured at midlength of the ship

### SCOPE

The ratio of length of anchor rode in use to the vertical distance from the bow of the vessel to the bottom of the water. Usually six to seven to one for calm weather and more scope in storm conditions.

### DUTCHMAN'S LOG

A buoyant object thrown overboard to determine the speed of a vessel; the time required for a known length of the vessel to pass the object is measured, and the speed can then be computed.

### PMBL

Parallel Mid-Body Length - describes the middle side area of a tanker's or other vessel's exterior hull which is flat and usually vertical. This is usually the area of the hull that is in contact with the pier when a vessel is docked. This area is measured from aft of the bow where the hull reaches maximum beam and then proceeds aft with little variance until the hull recesses again towards the centerline near the stern. This area is the same on both sides of a vessel and therefore runs in parallel down the middle of the ship. The length of the mid-body is important to know when voyage planning to determine if a vessel will safely be able to moor at a particular facility

### SAGGING

Straining of the ship that tends to make the middle portion lower than the bow and stern (See hogging)

### SHEER

The longitudinal curve of a vessel's decks in a vertical plane. Due to sheer, a vessel's deck height above the baseline is higher at the stem and stern than at amidships

### Related questions

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