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Marine Kit - 1 Shipyard Operations. Shipyard Operations Description. This shipyard operations activity requires two class periods Students work in groups of 4 Each session can be completed within one class period (55 min.)
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Marine Kit - 1 Shipyard Operations
Shipyard Operations Description • This shipyard operations activity requires two class periods • Students work in groups of 4 • Each session can be completed within one class period (55 min.) • Students learn about the various departments by building a paper container ship.
Shipyard Operation Schedule Day 1: Shipyard Operations Day 2: Design Calculations
Day 1 Day 2
Production Layout Material Flow Information Flow There are three departments within our shipyard and an external supplier Plasma Cutting Bending Machine Supplier Welding Our shipyard builds a container ship
Day 1: Activities • Instruction manual is provided to guide students in constructing the ship • Three departments are involved in this shipyard operation (excluding the Supplier) Teacher serves as the Supplier • Plasma Cutting Shop cuts the plates • Plate Shop bends the plates to form hull modules • Welding & Final Assembly Shop assembles the ship modules
Starboard Stern Bow Port Bow : Front part of the ship Stern : Rear part of the ship Starboard : Right side of the ship Port : Left side of the ship Ship Terminology
Ship Terminology Port Stern Bow Starboard
Activity Involved in the Plasma Cutting Shop • Receives steel plates from the supplier • Cuts the plates along the solid line • Sends the parts to the Plate Shop • All the parts are numbered in the order in which they have to be sent to the next department.
Bow – Cut Part from Plasma Shop Cut along solid lines
Mid-Hull – Cut Part Fold along dashed lines
Stern – Cut Part Directions for folding Part Number
Bow Deck Plate – Cut Part Stern Deck Plate – Cut Part
Activity Involved in the Plate Shop • Receives steel plates from the Plasma cutting shop • Bends the parts along the dotted lines using the instructions given in the instruction sheet • Sends the parts to the welding shop
Bow – Bent Part Bow Deck Plate – Bent Part
Mid – Hull Deck Plate – Bent Part Mid – Hull – Bent Part
Bulk Head – Bent Part Stern – Bent Part
Super Structure – Bent Part Stern Deck Plate – Bent Part
Activity Involved in the Welding Shop • Receives bent plates from the Plate shop • Welds (gluing/taping) the plates along the length of the joints and then assembles the parts • All the parts are joined to build the final assembly
Day – 2: Design Calculations In the first set of calculations students are required to calculate: • Weight of the ship • Weight of displaced water • Draft of the ship and • Kinetic Energy of the ship * The formulae and instructions for calculations are given to the students *
A t Q 1. Calculation of Weight of the Water Displaced by the ship Step 1: Area of the Plates Step 2: Volume = Area*thickness where A = Area and t = thickness Step 3: Total Weight = Weight of the ship + Weight of the containers • Weight of the ship = Sum of weight of each steel part • Weight of the containers(1500 TEU containers)(Weight of 1 TEU container=24 tons) Weight of displaced water = Weight of loaded Ship = Weight of Ship+ Cargo Weight
Q 3. Calculation of Kinetic Energy of Ship KE = ½ * m * v2 We know, 1 kg = 9.8 N 1 Ton = 9800 N Weight = m * g Therefore, m = weight/g where g = 9.8m/s2
A1 A1=A3 A4 A4=A6 A2 A2 A5 A5 Area Calculations - Bow Area of Bow= A1+ A2+ A3+ A4+ A5+ A6 = __________sq. mm = ___________sq. m
Calculation’s of Weight of the Ship Total weight of the Steel Plates =6,336,720 kg
Calculation of Weight of Water Displaced by the Ship Sum of weight of each part = _____________ kg = __________ tons Weight of steel used is approximately 50% of the weight of ship Therefore, the weight of the Ship = ___________ tons Weight of 1 TEU container = 24 tons Weight of 1500 TEU containers = ________________ tons Therefore, weight of water displaced by the ship = Weight of the Ship + Weight of the Containers = ___________________ tons
Q 2. Calculation of Draft of the Ship - Sample For example: The draft for the corresponding weight of water displaced (shown by the arrow) is 4.73 m
Calculation of K.E of the Ship KE = ½ * m * v2 Cruising speed = 26 knots (1 knot = .514 m/s) V = ___________ m/s We know, 1kg = 9.8 N, 1 Ton = 9,800 N So, 48,684 tons = _____________ N Weight = m * g (g= 9.8 m/s) m = _______________ kg KE = _________________ J
Quality Assessment Shipyard Operations will be assessed based on the following quality characteristics • Cutting on the solid lines • Cutting the corners and intersections properly • Gluing the joints properly • Hull alignment • Bends are straight and creased
Wrap-up • Make sure all the items are put back in the kit box and returned to the teacher. • Please clean the working area.