Safety – MEO CLASS 4 WRITTEN PAPER

161. To operate a portable foam fire extinguisher, you should _____________.

1. puncture the CO2 cartridge
2. open the handwheel
3. pull the pin and squeeze the trigger
4. turn it upside down and bump the deck

ANS.: D

162. If deck cargo is carried, it should be stowed so that it _____________.
     1. is not higher than 30cm above the deck
     2. does not block access to the fire station hydrant
     3. will cover no more than 25 % of deck space
     4. will be easily visible from the bridge
     5. is sufficient to enable the cadet to stroll through
     6. gives a clear view to the bridge for navigation

ANS.: B

163. Which of the listed systems related to an engineer’s signal alarm panel is required to be indicated by a continuously illuminated light?

1. Deaerating tank low level
2. Shaft alley bilge high level
3. Port or starboard steering gear motor running
4. 1 diesel generator low lube oil pressure

ANS.: C

164. Which fire extinguisher is most prone to freezing when stowed in low temperatures?
     1. Halon 1211
     2. Carbon dioxide
     3. Foam
     4. Dry chemical

ANS.: C

165. Bunker “C”, a grade “E” combustible liquid, will _______.
     1. give off flammable vapors below 80 ˚F (26.7 ˚C)
     2. have a Reid vapor pressure of 14 psi (96.5 kPa) or more
     3. self-ignite at temperatures below 150˚F (65.5˚C)
     4. have a flash point of 150˚F (65.5˚C) or more

ANS.: D

166. Which of the following statements describes the advantage of using a Halon fire extinguisher versus a CO2 fire extinguisher?

1. Halon cools rather than smothers a fire.
2. Halon is more effective than CO2.
3. Halon can extinguish combustible metal fires.
4. Halon is not toxic and safe to breathe under all conditions.

ANS.: B

167. You may improve a vessel’s stability by ___________.
     1. keeping the fuel tanks topped off
     2. increasing the free surface effect
     3. keeping the fuel tanks at least half full
     4. keeping at least one fuel tank empty for slops

ANS.: A

168. In order to find out which lifeboat you are assigned, you should look at the ___________.
     1. Certificate of Inspection
     2. Muster stations Chart
     3. Ship’s Articles
     4. Fire Control Plan

ANS.: B

169. Which of the following statements is true concerning Halon 1301?

1. The agent is extremely toxic in any concentration.
2. The agent leaves no residue.
3. The agent extinguishes a fire by smothering.
4. All of the above

ANS.: B

170. What is the usual effect of moving weight from the main deck to a position lower in the vessel?
     1. The stability of the vessel is increased.
     2. The trim of the vessel is changed substantially.
     3. The stability of the vessel is significantly decreased.
     4. The vessel will list in proportion to the volume of the cargo shifted

ANS.: A

171. The inclining experiment conducted on a merchant ship is the method for determining the exact location of the __________.
     1. ship’s displacement in seawater
     2. position of the ship’s center of gravity
     3. position of the ship’s center of buoyancy
     4. position of the ship’s metacenter

ANS.: B

172. Vessel stability can be adversely affected by ___________.
     1. increasing the free surface effect
     2. decreasing the free surface effect
     3. ballasting down by the bow
     4. ballasting down by the stern

ANS.: A

173. While wearing a demand-type self-contained breathing apparatus the alarm bell begins ringing. Which of the following conditions does this indicate?
     1. There is a 4-5 minute supply of air remaining in the air cylinder.
     2. There is approximately 500 psi (3.5 MPa) of pressure left in the air cylinder.
     3. The wearer should immediately leave the contaminated area.
     4. All of the above

ANS.: D

174. You are replacing a section of heavy piping on deck and using a chain fall to lift the pipe. Which of the following precautions should be taken to prevent personal injury?
     1. Position several men under the pipe so they can catch it if it falls.
     2. Attach lines to the ends of the pipe and have your helpers steady the load.
     3. Place an old mattress under the hoist to prevent the load from hitting the deck.
     4. Have a first aid kit at the job site

ANS.: B

175. With regards to the load line marks, the reason for the placement of mark “WNA” is ______________.
     1. more severe weather is expected in the North Atlantic in winter
     2. more freeboard is required in the North Atlantic in winter
     3. less draft is allowed in the North Atlantic in winter
     4. all of the above

ANS.: D

176. Many uninspected vessels require load lines to indicate the maximum ______________.
     1. reserve buoyancy under any condition
     2. amidship’s draft to which a vessel can be lawfully submerged
     3. angle of reduced freeboard for subdivision calculations
     4. freeboard for the light ship displacement

ANS.: B

177. The safe and efficient use of the face piece of a demand-type self-contained breathing apparatus is directly influenced by ____________.
     1. the donning of the facepiece
     2. the stowing of the facepiece
     3. he maintenance of the facepiece
     4. all of the above

ANS.: D

178. Immediately after abandon ship vessel, look out in life raft for
     1. Survivors in water
     2. Food and water
     3. Land
     4. none

ANS.: A

179. What is placed on the underside of an inflatable liferaft to help prevent it from being skidded by the wind or overturned?
     1. Ballast bags
     2. A keel
     3. Strikes
     4. Sea anchor

ANS.: A