Trim Calculation
[ Referensi : Chapter 11 Parametric Design , Michael G. Parsons ]
Input Data :
L : panjang kapal ( Lpp ) [ m ]
B : lebar kapal moulded [ m ]
T : sarat kapal [ m ]
: volume dispalsement [ m ]
LCG : titik berat kapal terhadap midship [ m ]
KG : titik berat kapal terhdap keel [ m ]
LCB : titik tekan bouyancy terhadap midship [ m ]
CM : midship coefficient
CWP : waterplane coefficient
Hidrostatic Properties :
KB = titik tekan buoyancy terhadap keel [ m ]
= ( KB/T ) . T
KB/T = 0.90 – 0.30 CM – 0.1 CB
[Chapter 11 Parametric Design ]
BMT = jarak antara titik tekan bauyancy terhadap titik metacenter secara melintang
= IT /
IT = moment of inertia of waterplane relative to ship’s transverse axis
CI = transverse inertia coefficient
= IT / LB3
= 0.1216 CWP – 0.0410 IT = CI . LB3
[ Chapter 11 Parametric Design ]
BML = jarak antara titik tekan bouyancy terhadap titik metacenter secara memanjang
= IL /
IL = moment of inertia of waterplane relative to ship’s longitudinal axis
CIL = longitudinal inertia coefficient
= IL / BL3
= 0.350 CWP2 – 0.405 CWP + 0.146 IL = CIL . BL3
[ Chapter 11 Parametric Design ]
Trim :
Trim = TA – TF
= ( LCG – LCB ).L / GML [ m ]
GML = jarak antara titik berat dan titik metacenter secara memanjang
= BML + KB – KG
Recommended
