Intact & Damage Stability Analysis,Inclining Test
INTACT STABILITY ANALYSIS
Intact stability is the basic and utmost check for ship's sea worthiness and very important when ship is not damaged.We have done intact stability using various codes and regulation. Intact stability criteria mainly includes area ratio checks,minimum area requirement up to down flooding angle or angle of vanishing stability,Angle for max GZ position and minimum GM etc.
Intact stability compliance is checked mainly against unprotected downflooding points where idea is mainly to check contingency in case of sudden heel due to gust wind or wave.
Defining Various loading conditions like lifting, anchor handling,towing, weather etc are very important for worst case Intact stability check.
Different classification societies have different set of intact stability rules however most of these rules have been extracted from IMO code.
Many special conditions Intact stability checks are performed with different codes like for Towing, lifting,fire fighting,anchor chain handling.
Sufficient GM is very important for Intact stability check and always regarded as one of the most significant indicator for sufficient stability.
We have years of experience in working with the ABS, Lloyds, DNV, BV, USCG and IMCI, and can quickly prepare a stability analysis that is fully compliant and rapidly reviewed and approved by these organizations.
Intact stability compliance is checked mainly against unprotected downflooding points where idea is mainly to check contingency in case of sudden heel due to gust wind or wave.
Defining Various loading conditions like lifting, anchor handling,towing, weather etc are very important for worst case Intact stability check.
Different classification societies have different set of intact stability rules however most of these rules have been extracted from IMO code.
Many special conditions Intact stability checks are performed with different codes like for Towing, lifting,fire fighting,anchor chain handling.
Sufficient GM is very important for Intact stability check and always regarded as one of the most significant indicator for sufficient stability.
We have years of experience in working with the ABS, Lloyds, DNV, BV, USCG and IMCI, and can quickly prepare a stability analysis that is fully compliant and rapidly reviewed and approved by these organizations.
DETERMINISTIC & PROBABILISTIC DAMAGE STABILITY ANALYSIS
Damage stability compliance is classification requirements for larger vessels. Due to complex tank structure and different loading conditions, damage stability is a time consuming job. We have performed many damage stability reports in house.
Damage stability comprises of various scenario for double bottom damage and wing damage conditions,
Classification societies have their own set of rules for damage stability guidelines.
Damage stability deterministic approach is adopted mainly for the vessels which are smaller in size and have comparatively less impact for human life and environment, However sometimes these damage guidelines are very stringent for the vessels which are carrying petroleum products or noxious liquids.
As the vessel size gets bigger and number of complement or special persons reaches a certain limit. Probabilistic approach of damage stability comes into picture. Where survival of vessel after damage is measured in terms of
probability , So probability of damage of certain compartments,probability of survival index is computed from IMO guidelines.
Vessels which meet index requirements are considered safe for navigation. Probabilistic damage stability is based on damage data of previous collision or grounding of many vessels so it represents a very realistic picture for damage stability.
We have extensive experience and comprehensive engineering tools to provide these difficult and complex calculations
INCLINING EXPERIMENT AND DOCUMENTATION
Inclining experiment is first step in way of determining ship's stability. It provides vital data for stability calculation.
Inclining experiment is done in calm weather. Normally weight transfer method or ballast transfer method is used for inclining experiment. Weights or ballast are shifted in various stages and heeling angles are measured at every stage.After 6 or 8 stages, we create a relationship between moment generated and heel angle produce which helps to determine GM of the vessel. Considering Inclining loading condition VCG, LCG and TCG can be determined. Theses figures obtained from Inclining experiment will be used to access the stability of the vessel.
We have completed many Inclining experiments for barges, accommodation vessels,,tug boats, tankers and various other kind of vessel.
Our team is expert in preparation of Inclining experiment procedure, Inclining experiment results and on board Inclining test.
Stability Projects
- Inclining experiment and stability analysis of 300 men Accommodation Barge
- Damage Stability of Tanker
- Stability feasibility of research vessel
- Inclining experiment test procedure and report of 60 m AHTS
- Loading manual of accommodation barge
- Probabilistic Damage stability Booklet of SPS vessel