NAV, Wetaher, ICE, LSA/FFE & General Flashcards
Preps for beaching - commercial
Commercial:
Access
Winching option
Yard shorelines
Speed - full
Slope = trim
Trim not to compromise minimum GM
No cargo, min fuel
min crew
documents destroyed
oil pollution kit ready
emergency lighting
test emergency gen
inventory of hazmat
hong kong convention
Beaching in an emergency
Location
Seabed
Trim same as slope
Sandy ideally
Speed max
Drop anchor
Mid tide
MAIB
MCA
Logbook
Owner
Half ballast
Full ballast
What is a TRS?
Tropical revolving storm
Also known as Typhoon
Hurricane
Formation of a TRS
- low to no vertical wind shear
- unstable environment to enable the air to rise at the ITCZ (trade winds)
- Sea temp of at least 27 degrees
- Lat 5-30oN (& south)
- Effect of Coriolis force (maybe need to explain this for examiner, remember it is 0 at equator and strongest at the poles due to earth curvature not less than 10m/s required) .
- As wind rises, and continues to rise & cool, a low pressure is create. Thus, surrounding air will drafted in to replace this ‘lost air’.
What would you do as Master if you pop onto the bridge and OOW as said pressure drop is 5mb?
Ask if there has been any weather warnings lately? I would establish the ship’s position and ask the OOW to give me a full weather report for now and the trend of the weather recently
Visiually I will be looking for an unexpected low long swell, ugly luird sky, sea animals I would not expect (check marine animal log), verify weather reports, diurnal variation for this area? (differ by 3mb in vicinity, differ by 5mb at 200nm), change in local wind direction, any storm tides (-5 to 5m different), what are the clouds? Any cirrus cloud? This would point to the direction of the TRS.
Once I have gathered the data, I would inform the company and charterer that there could be a possible delay / change in my course and speeds. I would hold a meeting with HODs and ask for the ship to be prepared for heavy weather immediately, do we extra cargo lashings for example? Minimise my FSE and press up tanks if able to.
Where is my ship? Where is the wind? Am I safe or not?
Report this to all ships and coast radio stations as I am obliged to do so as per SOLAS chV reg 31.
What are your duties as per SOLAS CHV reg 31?
Master which meets:
1) Dangerous ice
2) a dangerous derelict or
3) any other direct danger to navigation or
4) a tropical storm or encounters
5) sub freezing air temps associated with gale force winds causing severe ice accretion on supertructures or
6) winds of force 10 or above on the beaufort scale for which no warning has been received.
Master to infrom all ships and coast radio station. In english or ICS.
What to do if you have veering wind in NH TRS?
Dangerous semi circle
Alter the vl and place wind on STBD BOW at 10-45 degrees. Turn to STBD as wind veers. (Navigable and port 1/4 for SH)
DANGEROUS SEMI CIRCLE TOWARDS THE POLE (EITHER HM)
Wind backing NH TRS, action?
Navigable semi circle, place wind on stbd 1/4 and alter to port as wind continues to back. (opposite in SH, dangerous, keep wind on my port bow and alter to stbd)
Why is the danergous semi circle the dangerous semi circle?
BECAUSE IT IS!!!!
Strongest winds
Path of recurvature
Winds blow you onto path of storm
What is a depression?
(See a Dr for clinical depression!). Weather wise… it is a low pressure, associated with the trade wind pattern. Where an area of fast moving cold air meets warmer air, it will cause the warmer air to rise and creates a low pressure (and associated fronts). usually follow trade wind patters and moves West to East. UK weather. Unstable air. The air rises and forms a lot of cloud, associates with rainy weather. Isobars are closer together meaning stronger winds.
Look at todays synoptic chart, forecast the weather for a spot west of Ireland. Identify the main features of the synoptic chart.
Describe the passing of a warm front, warm sector and cold front (clouds, temp, wind speed, precipitation).
Warm: cirrus, cirro stratus, alto stratus, nimbo stratus (rain filled), wind gradual increase before the front, rapid drop after the front passes. Temp up before front, rapid increase after the front, rain at passage of front during to drizzle in warm sector.
Cold: Cirrco Cumulus, Alto cumulus, cumulonimbus (thunder cloud), cumulus. Wind rapid increase before the front and gradual drop after the front. Temp rapid drop before the front and gradual increase after the front passes. Lots of thunder and shower lightning at passage of front, after front isolated showers.
Revise method for calculating relative wind
You have a cadet on board, they would like to know how you predict fog at sea. Explain the procedure.
Plot seasurface temp and dew point, then bobz yer uncle.
Explain the tw types of fog?
Advection (sea) and radiation (land). Advection remember warm air over cooler surface, cools and creates fog. Radiation requires a clear night, little wind, cool ground cools the air in contact and creates the fog (usually early morning).
What additional equipment would you find in your rescue boat?
paddles in lieu of oars
one boat book, hatchet and fire extingusiher in stead of two
only one painter
additionally a buoyant line of not less than 50m
Pump and repair kit
knife and two sponges
we also have jacobs ladder
Can you end to end fall wires after 5 yrs?
No. Fall wires must be replaced every 5 yrs, not end to end.
As per MGN 71, if a key person was unable to carry out their duty, what provisions must be in place?
A provision made or subs. I.e. abandon ship by master or their deputy if incapacitated.
How many lists of crew shall there be for lifeboats?
One for IC and one for 2IC on each boat
Requirements for abandon ship and fire drill MGN 71
1 per month (for each) and within 24 hours of leaving port if more than 25% of the crew have changed (remember ISPS drill within a week if more than 25% changed).
What happens if you cannot fulfill the 24 hour requirement to conduct a drill?
If unable, then a muster shall take place in lieu and a full abandon ship drill asap.
Pax vessel requirements if passengers are on for ?24 hours?
Full abandon drill, run through lifejacket donning, plus a broadcast of info.
Weight limit for child lifejacket?
32Kg
Do you practice watertight door shutting in fire drills?
Yes. All seagoing vessels are required to check the operation of WT doors in the drill area.
How often shall you launch your lifeboat?
Turn out weekly, lower to embarkation deck monthly, launch with operating crew and drive around 3 monthly and simulated launch for free fall 6 monthly. Free fall still to be davit launched 3 montly and ran in water.
Can you extend the freefall lifeboat 6 monthly launch?
Yes, owener must ask MCA for extension and it’ll become a 12 month test.
Requirements for rescue boat drills?
Monthly but interval between drills must not exceed 3 months. Should also simulate recovery of a MOB for example.