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Worksheetsunit 202 mock exam 1 (2026)
Total questions: 45
Worksheet time: 1hrs 8mins
A piece of Teak has a density of 650kg/m3. Calculate the mass of a rubbing strake measuring 4m×0.05m×0.02m.
1.3 kg
2.6 kg
3.25 kg
6.5 kg
Which phenomenon occurs when water penetrates a gelcoat and reacts with un-hydrated chemicals?
Galvanic Corrosion
Electrolysis
Osmotic Blistering
Delamination
If the Epoxy mix ratio is 5:1 by weight, how much hardener is needed for 250g of resin?
25g
50g
75g
125g
Which metal is the most 'Noble' and least likely to corrode in seawater?
Aluminum
Stainless Steel (316)
Zinc
Magnesium
A laminate has a 30:70 Glass-to-Resin ratio. In a 10kg laminate, what is the weight of the glass?
3kg
7kg
4.5kg
1.5kg
Which timber defect is caused by rapid drying of outer layers while the core remains wet?
Waney edge
Honeycombing
Cupping
Heartshake
A timber sample weighs 120g wet and 100g oven-dry. What is the Moisture Content (MC%)?
10%
15%
20%
25%
Which resin type has the highest mechanical strength and water resistance?
Polyester
Vinylester
Epoxy
Phenolic
What is the purpose of 'Core' materials in sandwich construction?
Add weight
Increase stiffness/weight ratio
Fireproofing
Prevent osmosis
In the Galvanic Series, if you bond Zinc to Steel, which acts as the anode?
Zinc
Steel
Both
Neither
Which timber is naturally resistant to decay and used for keels?
European Pine
Iroko
Balsa
Sitka Spruce
"Star crazing" in a GRP hull is usually a sign of:
Osmosis
Impact/Flexing
UV degradation
Poor mixing
What is the purpose of 'Antimony Trioxide' in a resin mix?
Improve color
Speed up cure
Fire retardancy
Thin the resin
Wood being 'orthotropic' means its properties:
Are uniform
Differ along 3 axes
Change when wet
Are like plastic
The "Body Plan" view represents the boat as viewed from:
Above
The side
Bow and Stern
The Keel up
A drawing scale is 1:20. A bulkhead measures 85mm; what is its actual width in meters?
0.85m
1.7m
4.25m
17m
In a Table of Offsets, measurements are usually:
m, cm, mm
ft, inches, eighths
deg, min, sec
L, B, D
On a drawing, a 'Hidden Detail' line is:
Thick continuous
Thin continuous
Long-dashed
Short-dashed
A deck plan shows a hatch with a "Coaming." Its purpose is:
Aesthetics
Prevent water entry
Hold glass
Act as a seat
If a boat has a 'Rake' on its transom, this refers to:
Stern width
Vertical height
Transom angle
Ply thickness
Under COSHH, what does 'WEL' stand for?
Water Level
Weekly Limit
Workplace Exposure Limit
Waste Law
What is the standard 'honing angle' for a hardwood chisel?
15 degrees
25 degrees
30 degrees
45 degrees
Which fire extinguisher is for GRP workshops (resins/acetone)?
Water
Dry Powder
Foam
CO2
A circular saw 'Riving Knife' is designed to:
Guide wood
Prevent kickback
Clear dust
Support guard
Which drill bit is best for large, flat-bottomed holes?
Twist bit
Flat bit
Forstner bit
Auger bit
The risk of an 'Exothermic Reaction' in resin is:
Blue color
Fire/Extreme heat
Won't harden
50% shrinkage
When must a 'Type A' organic vapor filter be used?
Sanding wood
Antifouling
Laminating resins
Sweeping
A boat displaces 5,000L of freshwater (Density 1000kg/m3). Its mass is:
500 kg
2,500 kg
5,000 kg
10,000 kg
Which member runs longitudinally along the hull-to-deck joint?
Stringer
Gunwale (Inwale)
Floor
Carline
In Clinker construction, how are planks joined?
Mortice/Tenon
Copper Rove/Nails
Epoxy Fillets
SS Screws
What is the purpose of a 'Limber Hole'?
Save weight
Water flow to bilge
Wiring route
Vent fumes
In GRP layup, 'Wetting Out' refers to:
Cleaning mold
Applying resin to fiber
Sanding gelcoat
Adding pigment
Building a hull from thin veneers over a fixed frame is called?
Carvel
Strip Planking
Cold Molding
Stitch-and-Glue
A 'Scantling' measurement refers to:
Boat length
Dimensions of structural parts
Bow angle
Keel depth
How do you prevent galvanic corrosion between bronze and aluminum?
More sealant
Isolation bush
Gold paint
Zinc washer
In 'Stitch and Glue,' what holds panels initially?
SS bolts
Copper wire/ties
G-Clamps
PVA Glue
What is the purpose of a 'Scarf Joint'?
Increase length
90-degree join
Hide defects
Decorate bow
A 'Tumblehome' on a hull means:
Gets wider up
Narrows above waterline
Flat-bottomed
Heavy keel
Which component seals the prop shaft?
Rudder
Stuffing Box
Prop Nut
Cutlass Bearing
Volume of a buoyancy tank: 1.5m×0.4m×0.5m?
0.15m3
0.3m3
0.6m3
0.75m3
In vacuum bagging, 'Breather Fabric' is used to:
Keep resin warm
Soak resin/allow air flow
Finish surface
Protect mold
The downward curve of a deck from center to side is:
Shear
Camber
Deadrise
Flare
A hull with 'High Deadrise' is designed for:
Offshore speed
Canal cruising
Stability at rest
Heavy cargo
Function of 'Floor' members in a wooden boat?
Walk surface
Join frames across keel
Support mast
Hold fuel tanks
A 'Plug' in GRP boatbuilding is:
Drain hole
Model to create mold
Final hull
Mixing tool
