Coefficient of Forms Lecture 2

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Coefficient of Forms Lecture 2 Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Co-ordinate System of Ship Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Coefficients of form Are the dimensionless number that describes the fineness and the overall shape of the ship. Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The block coefficient of fineness of displacement (Cb) Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The block coefficient of fineness of displacement (Cb) The block coefficient of a ship at any particular draft is the ratio of the volume of displacement at that draft to the volume of a rectangular block having the same overall length, breadth and depth. Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The block coefficient of fineness of displacement (Cb) Volume of displacement Block coefficient (Cb)= Volume of the block = L x B x draft Volume of displacement = L x B x draft x Cb Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The block coefficient of fineness of displacement (Cb) Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The block coefficient of fineness of displacement (Cb) Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The block coefficient of fineness of displacement (Cb) Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The coefficient of fineness of the water-plane area (Cw) It is the ratio of the area of the water-plane to the area of a rectangle having the same length and maximum breadth. Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The coefficient of fineness of the water-plane area (Cw) Area of water-plane Coefficient of fineness (Cw ) = Area of rectangle ABCD = L x B Area of the water-plane = L x B x Cw Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The coefficient of fineness of the water-plane area (Cw) Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The coefficient of fineness of the water-plane area (Cw) Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The midships coefficient (Cm) The midships coefficient to any draft is the ratio of the transverse area of the midships section (Am) to a rectangle having the same breadth and depths. Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The midships coefficient (Cm) Midships area (Am) Midships coefficient (Cm) = Area of rectangle = B x d Midships area (Am) = L x B x Cm Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The prismatic coefficient (Cp) The prismatic coefficient of a ship at any draft is the ratio of the volume of displacement at that draft to the volume of a prism having the same length as the ship and the same cross-sectional area as the ship’s midships area. Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The prismatic coefficient (Cp) Volume of ship Prismatic coefficient (Cp) = Volume of prism = L x Am Volume of ship = L x Am x Cp Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The prismatic coefficient (Cp) Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

The relation between coefficients Am Volume of ship Cm x Cp = x B x d L x Am Volume of ship = L x B x d Cm x Cp = Cb Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Hull Form Coefficients Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Half breadth Plan Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Sheer Plan Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Body Plan Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Examples Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Examples Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019

Examples Laboni Afroz, Assistant Professor, NAME, BUET 2/23/2019