The course will enable the capabilities to:
design ships in relation with the most relevant rules dealing with the buoyancy and stability of ships in the intact and damaged conditions.
evaulate the final equilibrium condition of a ship (and relevant stability) in case of damage
Lectures in classroom.
Assignements, practical applications and discussion on selected topics during the semester.
Introduction to the Rule Making environment: IMO, Flag State, Classification Societies.
• The righting arm (RA)
Relation between RA and ship main dimensions (midship section)
The RA at very high heel angles
The down-flooding angle: watertight and weather-tight closures
Influence on the righting arm deriving from
- Trim (initial trim, “free to trim”)
- Wave profile
• The linear roll motion of ship for the evaluation of the roll period
• Inclining moments:
- effect of wind
- effect of turning at speed
• The Intact Stability Code 2008
- General stability criteria
- Wave and wind combined effect (whether criterion)
- Special requirements for passenger ships
• Lightship weigh estimation
• Inclining experiment
• Solutions for the ship in damage:
- loading of weight method
- constant displacement method
• Deterministic methodology for safety subdivision (former SOLAS)
Floodable length curve
Permissible length curve
Stability requirements
• Deterministic requirements for oil tankers, chemical tankers, gas carrier
• Deterministic requirements navy ships
• Probabilistic methodology for safety subdivision (SOLAS 2009)
Require subdivision index R
Attained subdivision index A
Probabilistic parameter relevant to the damage p,r,v
Probabilistic parameter relevant the ship survivability s
Selected exercise
• Ship Grounding
• Stabillity of underwater vehicles
The relevant IMO safety rules delivered in paper in classroom and/or available on aulaweb.
Ricevimento: place: villa cambiaso - Prof. Gualeni and Prof. Piaggio office time: students are invited to send an email or to pop up in office in order to agree about the time In case students are not able to reach villa cambiaso, a remote meeting can be arranged on TEAMS
PAOLA GUALENI (President)
DARIO BRUZZONE
GIULIANO VERNENGO (President Substitute)
MICHELE VIVIANI (President Substitute)
https://corsi.unige.it/8738/p/studenti-orario
Oral test.
In order to be admitted to the oral test, students have to present and discuss two practical assignement described during the semester. Students are requested to get in contact with the teacher in order to agree on a meeting for the discussion, to be held one week in advance with respect to the oral exam.
Oral test: two open questions about topics developed and discussed in classroom during the semester.
Questions are aimed to assess the capability of the students to discuss about theorethical and practical aspects of ship hydrostatics and stability.
Specific attention will be given to the capability of indicating the basic assuptions together with the input data, the target of the procedure and its rational developement.
During the (previous) conversation about the assignements, the students will be requested to give evidence of capability to apply in practice the theorethical methodologies with the proper critical attitude toward results.
