Course Overview
The Ship Construction 3 course covers the following topics: A review of ship stresses arising from longitudinal bending and shear forces caused by (i) longitudinal differences in weight and buoyancy, (ii) longitudinal wave profile, and (iii) local loads such as docking, grounding, pounding, and panting. A review of the terms: longitudinal and still water bending, hogging, sagging, and racking. Definition of shear stress and bending moment by calculation and use of diagrams. The need to keep the ship’s SF and BM within limits and means of determining SF and BM using a loading instrument. Stresses caused by torsional moment: causes and remedies. The use of scale modelling to show the construction arrangements for double bottoms, forward and after peak structures, anchor handling, framing systems, decks and bulwarks, hatch covers, structural discontinuities, bilge keels, hull strakes and hull fittings. In addition, the following construction arrangements will be considered: strength members associated with engines, deck machinery and stabilizers, strength and watertight integrity of bulkheads, rudders and supports, and design criteria of specialized ships. Included will be the construction requirements for structural fire protection and analysis of ship’s drawings such as the general arrangement, shell expansion, and lines drawing. Next will be the general design and construction features that provide watertight integrity for SOLAS compliant vessels, and the Intact Stability Code. Following this, is a section on ship dynamics, explaining the effects of ship motions such as rolling, pitching, vibration, and the means to mitigate this by use of fin stabilizers and anti-roll tanks. The final section covers damage control in the event of flooding of compartments, and the effect of flooding on ship stability.
Prerequisite(s)
- Successful completion of Term 5.
Credits
4.0
- Not offered this term
- This course is not offered this term. Notify me to receive email notifications when the course opens for registration next term.
Learning Outcomes
Upon successful completion of this course, the student will be able to:
- Describe the stresses in ship structures caused by (i) longitudinal bending and shear forces and (ii) transverse bending, docking, grounding, pounding, and panting. Calculate the longitudinal shear force and bending moment in a simply-supported beam. Draw the SF and BM diagram of a box-shaped vessel for a given distribution of load.
- Describe torsional moments and the type of vessels affected by TM. Describe the use of a loading manual and loading instrument designed to ensure that BM, SF, and TM are within acceptable limits.
- Review the construction and function of double bottoms, duct keels, forward and after peak structures, structural arrangements for anchor handling, stockless anchors, longitudinal, transverse, and combined framing, decks and supports, hatches and hatch covers, bulwarks and structural discontinuities, engine room double bottoms and of stern frames, rudder, and rudder supports. Build scale models of these structures.
- Summarize the main structural design criteria for specialized ships such as crude oil tankers, dry bulkers, container ships, LNG ships, and ro-ro ships.
- Describe the general construction arrangements for structural fire protection; describe the use of ship’s drawings such as the general arrangement, shell expansion, and lines drawing.
- Sketch and describe watertight bulkheads and watertight doors required to provide watertight integrity for SOLAS-compliant vessels. State the extent of damage cargo ships are required to withstand.
- Explain the structural effects of ship motions such as rolling and pitching. Sketch and describe the means to mitigate these motions by use of bilge keels, fin stabilizers, and anti-roll tanks. Explain the typical causes of hull vibration, and describe the means adopted to reduce vibration.
- Explain the basic tenets of the Intact Stability code. Explain, with respect to damage and flooding: floodable length, margin line, bulkhead deck, permeability of a space, ‘permissible length of compartments’ in passenger ships, Criterion of Service Numeral, and factor of subdivision. Summarize the extent of damage which a passenger ship should withstand.
- Describe the provisions to deal with asymmetric flooding. State the requirements for the final condition of the ship after assumed damage and after equalization of flooding. Describe the minimum stability requirement in the damaged condition, with the required number of compartments flooded.
- Explain the freeboard computation of Type A and Type B ships. Describe the extent of damage Type A and Type B ships are allowed to withstand. Describe the equilibrium conditions regarded as being satisfactory after flooding. State the causes of ship sinking as a consequence of compartment damage.
Effective as of Winter 2017
Programs and courses are subject to change without notice. Find out more about BCIT course cancellations.