Question

3 Circle Area momentEllipse Area moment of Fig A Ship resistance (KN) versus speed (knots) of inertia rInrtia Iab/4 for a displacement hull, with a mark at a of 1.34 1. [20 pts] In class we showed the floating ship resistance R in bs or KN is approximated by the relationship R- Ro [ v/vo Using this relationship complete Table A Table A 2.5m Kayak resistance Estimate the resistance R over the speed range O v< 2.5 m/s 0.25 0.5 Vo 2.5 m/s Ro-20.0 1.5 Resistance R, KN 2. [30 pts) 2.5 m Kayak Data: Displacement-0.85 m3 KB waterplane is an Ellipse with a # 1.25 m and b :0.75 m T-0.3m 0.2 m Req. 2.1 Determine the lxx for the Kayak at T 0.3 m x 2.2 Determine the BMt m for the Kayak at T 0.3 m BMt 2.3 Determine the KMt m for the kayak at T-0.3 m KM 2.4 With a seated rower the KG-1.2 m What is the GMtm Is it stable Yes No 130 pts] For a sailing Kayak, rectangular side hulls 1-0.5 m and beam b 0.3 m T-0.1 m are fitted to the Kayak. Each is 1.7 m from the kayak center to the side hull center. 3.1 Using the parallel axis theorem calculate the ixx for the Kayak with side hulls 3.2 Determine the BMt (assume the Kayak and side hulls has a 0.89 m) 3.3 Determine the KMt' for KB 0.2 m 4. [20] The Offshore platform has 4 legs supporting the deck. Each leg is 10 m diameter separated By 40 m. 40 m o 40 m 0 40 m o 4.1 What is the Ixx of a cylinder .2 What is the lxx' of the platform

Answer 1

See the attached images for the solution.

Vo= 2.5m)s 2.

TABLE-A Speed Vo -205 m/ ResStakel 0.2 |0、8|3:2 | 7-2 |2-8 | R,-20.0 RCKN)