The structural integrity of the ship is assured by implementing a number of different combinations of loads, wave periods, and heading angles. For each situation, a number of load components are calculated, such as external wave pressure, acceleration of the liquid cargo
and ballast tanks, accelerations at several stations along the ship's length, wave-induced bending and torsional moments together with the corresponding shear forces along the length of the ship, and the ship's motion in roll and pitch modes. The short-term response of the ship is obtained through the evaluation of the seaway spectrum, which is assumed to be stationary in a period of a few hours. The long-term response and the probability of exceedance of the load are evaluated from the short-term prediction.
The hull girder loads are calculated from a number of components. The most significant of these components are the still-water moments and shear forces resulting from the weight of the ship, cargo, and buoyancy. The second major component of hull girder loads is, the dynamic-
induced loads that include the vertical and horizontal bending moments, shear forces and torsional moment. These dynamic loads result from wave motions encountered by the ship. The classification rules are used to determine the still-water bending moments and shear forces,
as these are mainly dependent on the loading conditions of the vessel. A more detailed analysis is required when determining the dynamic aspects of the hull girder loads.
Such analysis is based on the sea conditions that the vessel is bound to encounter over its lifetime. Normally, a 20-year service life is chosen and appropriate wave data is selected. The result of such an analysis determines the extreme values that are used to calculate a design value for the hull girder loads. When determining the hull girder loads, the vertical bending moments and shear forces are
calculated first. Then tables and other sources of data are used to calculate the ratio of vertical to horizontal bending moment and shear force. These ratios are mainly dependent on the ship's dimensions and loading conditions.
Khasiat Fadhilat (Isnad) Doa Haikal - Majmu' Syarif
Inilah khasiat fadhilat Doa Haikal yakni 7 doa drp no. 1 sampai no. 7 & sampai "Qul a'uuzubirabbinnaas" bahawasanya adalah diriwayatkan oleh Nabi kita Muhammad SAW pd suatu hari sedang Nabi kita SAW duduk di dalam Masjid Madinah maka Jibrail AS pun datang membawa firman ujarnya, "Ya Rasulullah SAW salam Allah SWT pd tuan hamba & firmannya, 'Hai kekasihku adapun doa ini yakni 7 doa ini dihantarkan Tuhan pd tuan hamba maka barangsiapa tiada percaya akan doa ini kafirlah ia & barangsiapa membaca dia atau menyimpan dia maka Allah SWT melepaskan dia & ibubapanya drpd api neraka ya Muhammad barangsiapa menaruh doa ini di dlm rumahnya maka tiada boleh masuk jin & syaitan ke dlm rumahnya itu ya Muhammad barangsiapa suratkan doa ini & dipakai diperbuat tangkal nescaya terlepaslah ia drpd azab sengsara & wabak & duduk itu dlm aman & lagi barangsiapa menaruh doa ini sentiasalah ia dihormati orang & termulialah ia pd orang banyak &
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