Saab G3 Manual de usuario descargar pdf (Pagina 66)

Service Manual

Third edition, June 1997

5.8.2 Adjusting the Trim/List Unit

1. Measure the trim and list angles of the ship.

A ship´s trim is the difference between the draft forward and

draft aft. The trim-angle is defined as β in the figure.

- D

tan β =

where:

= draft aft,

= draft fore,

L = Length between scales.

Note: Aft trim is positive and forward trim is negative.

The list angle can be established by hand dipping towards

the water surface from port and starboard rails. The list angle

δ is calculated by:

- h

tan δ =

where:

= port dipping distance,

= starboard dipping distance,

w = ship´s width at the dipping point.

Note: For Saab TankRadar, the list angle is considered positive for

port list; conversely, it is negative for starboard list.

–

Positive trim

FORE

AFT

Port

Star-

board

–

Positive list

Figure 5-6. Trim and list

definitions.

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Saab G3 Manual de usuario Pagina 66