stiff - large gm, voilent roll, short duration of roll,
tender - comparatively low gm, smooth roll,
brendon & kamlesh
all the discharge criteria according to marpol can be read here , annex 1-6 of marpol 73/78
intact stability of any ship is the minimum stability requirement to be considered safe for sea going,you can read the full intact stability criteria for all vessel here
these are two impportant mechanisms for lifeboat launching , please read on load & off load release mechanism of lifeboat here
i. Panting stresses is an in and out motion of the plating in the bows of a ship and is caused by unequal water pressure as the bow passes through successive waves.
ii. Pounding stresses is exist when ships is pitching. Ship’s bows lift clear of the water and come down heavily. It causes damage to the bottom and girder at the bow.
The stability booklets contents will vary between states, and may be more inclusive than described here. Individual stability booklets may not contain all parts, particularly if hand generated. Static characteristics (cross-curves, hydrostatics) may be required for a number of conditions of trim.
# 1.3 Contents
* 1.3.1 Introductory Notes
* 1.3.2 Vessel Verification
* 1.3.3 Conditions of Load
* 1.3.4 Vessel Information
* 1.3.5 Instructional Information