Boat building 202 2473

Which one of the following is not a hardwood

• Teak

• Oak

• Spruce

• Mahogany

Which of the following timbers is not a softwood?

• Elm

• Douglas Fir

• Parana Pine

• European Redwood

The most common material used in FRP is?

• Glass

• Nylon

• Kevlar

• Carbon

Which one of the following metals if ferrous?

• Brass

• Steel

• Bronze

• Copper

Answer explanation

Ferrous metals contain iron

Which one of the following metals is non-ferrous?

• Cast Iron

• Mild Steel

• Wrought Iron

• Nickel Aluminium

Which of the following metals is an alloy?

• Zinc

• Copper

• Bronze

• Aluminium

Which one of the following boards would be best for the cabin sole of a yacht?

• MDF

• Plywood

• Chipboard

• Blockboard

Answer explanation

Should really be Marine Ply, all other materials listed have no permanent place on a boat.

Marine plywood is made with?

• Very durable veneers and WBP adhesive

• Moderately durable veneers and casein adhesive

• Durable veneers and melamine adhesive

• Very durable veneers and moisture resistant adhesive

The best way to identify brass is by?

• Weight

• Colour

• Density

• Magnetism

The effects of electrolytic action on brass screws would be?

• Anodising

• Cavitation

• Dezincification

• Crevice corrosion