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. 2011-2012

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, . , , , , , ... ------------ I.M.O. Res. A749 (18): Code on Intact Stability IACS UI Recommendation 31: Inclining Test Unified Procedure (Rec 31)

Principles of Naval Architecture , Stability (section 9: pages 122-128)

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:

1.

2.

3.

4.

1. 500 GT, .

2. ,

3. 15m

4. L

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. ( ). G. KG LCG .. .. Lightship KG, LCG Lightship.

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(1)

...

. . .. ... . .. . .

, , .

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(2)

.

2% Lightship , .

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(3)

. . .

.. .

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(4)

: , water ballast ( ). water ballast . . .

..

.

.

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(5)

.. 1 (1-4 ). (For heeling angles exceeding 4 it is likely that the righting lever curve (GZ curve) leaves its linear section). C.L., .

: GL: During the inclining test as a minimum eight distinct weight movements have to be conducted. The eighth movement is a recheck of the zero point.

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(6)

, . 15 cm. 3 m 4 6 m. . .

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(7)

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(1)

1. : Taft, Tforward, Tamidships

GL:To obtain exact results the draft readings should be taken immediately before or after the inclining test on each side of the vessel at all draught marks (at least aft, midship and forward). If no midship draft mark is available, the distance from waterline to Plimsoll mark shall be taken.

The accuracy of draft readings shall be within 1 cm. To achieve such accuracy

it is recommended performing draft readings by use of a transparent flexible draft tube, tagged with a scale that can be held directly to the draft marks. By this equipment the influence of waves can be eliminated.

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(2)

1. : Taft, Tforward, Tamidships

sagging hogging.

: sagging : sagging = (+F)/2 K1X=KX+KK1

ft, Fwd , sagged hogged .

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(3)

2. : , .

3. (cf) , V, KMt, KB

4. . , ( & ). [ . ].

5. & .

6. .

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(4)

7. GMaft, GMfwd

8. Gaft GMfwd GM.

9. GM= GMcorrected, GM

10. KG = KM GM .

LCG

1. (cf) , LCF, LCB, MCT

2. : t= Taft Tforward

=

...

LCG

MTC

LCGLCBt

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(5)

Lightship weight

1.

2. Lightship condition

( ).

=