Practice english grammar

Hernandez, Remefil H. · 12問 · 2年前

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What do you call the waves that are formed when the wind changes its direction after the storm or typhoon?

Swell waves

What will happen when the waves enter the shallow water?

Speed decreases

Which of the following refers to the slowing and bending of waves in shallow water?

Wave refraction

Which of the following is used to forecast wave heights?

Dorrestein Nomogram

Which type of waves are formed by generating wind?

Sea waves

Which of the following generates largely the surface currents?

Wind

What is shown in the chart as arrows towards the set and the speed is according to the length and thickness of an arrow?

Vector mean current

Which of the following refers to currents at sea?

horizontal movement of the water

Which of the following is the only ocean surface current that joins the waters of all the oceans?

West wind drift

What direction does Brazilian current generally flow?

Southwesterly

What do you call the oceanic current in which the pressure gradient force is balanced by the Coriolis effect?

Geostrophic current

Where do warm ocean currents originate?

Near the equator

Which of the following is most useful to navigators?

Current rose

What is the current circulation in the North Atlantic Ocean?

Clockwise

Which of the following is the current generated by the prevailing winds?

Drift current

Which of the following is less effective in removing large amount of ice on ships

Heaters

Which part of the ship do ice accumulate last?

Deck/bulkheads

What is the best method of preventing a ship to capsize during severe icing conditions?

Manual removal of ice

The most intensive ice formation takes place when wind and sea come from which of the following?

Ahead

How can the effects of freezing sea sprays on ships be minimized?

Reduce speed

What would be the result if a wind of force 7 blows and the air temperature is -2.2°C or less?

Moderate icing

Which of the following are the most hazardous form of ice at sea?

Growlers

Which of the following signs indicate that an ice field is within the vicinity?

Ice blink

Which of the following is to be avoided when anchoring in ice-covered water?

Heavy concentrations of ice

What is the first principle of successful ice navigation?

Maintain freedom of maneuver

How far can a growler be detected visually from the vessel under good weather condition?

Two to three n.m.

Which side should icebergs be passed?

Windward

What is that long and narrow sheet of ice projecting out from the coastline and forms when the valley of glaciers moves very rapidly out into the ocean or lake?

Ice tongue

What term is used to describe the process of breaking off an iceberg from glaciers

Calving

Which one is a thick floating platform of ice that forms where glaciers or ice sheet flows down to the coastline and into the ocean surface?

Ice shelf

What are used for the international exchange of meteorological information?

Meteorological codes

What is the meteorological code for Cirrocumulus clouds?

Who are the representatives of the Meteorological Service of the country as far as the local contact with maritime authorities are concerned?

Port meteorological officers

What system uses the letters and numbers to denote various weather types?

Beaufort Code

Which of the following is used to record various data, scenario, and situations including emergency situation, weather conditions, and action which are later used for reference, case study and for marine insurance purpose in case of damage to the ship or loss of ship's property should be properly filled without any errors?

Bridge logbook

What is an international program comprising the member countries of the World Meteorological Organization (WMO) that recruit ships to take, record and transmit marine meteorological and oceanographic observations while at sea?

Voluntary Observing Ship Scheme

Which of the following is responsible for establishing international standards and procedures for preparing the codes and specifications used by meteorologists internationally?

World Meteorological Organization

Who issues the Atlantic Weather Bulletin for shipping, which covers an area bounded by latitudes 35° N to 65° N, longitudes 15° W to 40° W and the sea along the coasts of Biscay, Finistere, Denmark Straight, and North Iceland?

British Authorities

What is being broadcasted regularly by shore radio stations listed in the Admiralty List of Radio Signals, Vol.3 and 3a, to serve the needs of navigators in general?

Weather bulletin

What information can you find in the 4th part of the Weather Bulletin?

Coded analysis of the present weather

What information can you find in part 5 of a Weather Bulletin?

Reports from ships at sea

What describes the actual weather observation at a given time?

Weather report

What do you call the prediction of expected weather for the next 24 hours or so?

Weather forecast

What provides weather forecasts and tropical cyclone warnings, flood bulletins and advisories, hydrological, climatological and farm weather forecasts in the Philippines?

PAGASA

What is the principal method for dissemination of Marine Safety Information?

Navtex

How many parts is the content of a weather bulletin?

Six parts

How often is the use of Routing chart onboard ships?

Monthly

Which of the following contains wealth of information on ocean voyage for commonly used shipping routes?

Ocean passages of the world

What is the procedure of ensuring that the ship makes an ocean passage in the least possible time conducive to the safety of the vessel?

Weather routeing

What is the predicted track that the vessel should take to complete the voyage in the shortest possible time?

Least time track

What is the major factor affecting ship performance in weather routeing?

Wave Height

What is the mariner’s first resource/s for route planning in relation to weather?

Pilot Chart Atlases

Which one is essential for use in passage planning for ocean voyages that include routes and distances between major ports, ocean currents, ice limits, load lines and wind roses?

Routeing Chart

Which of the following have most adverse effect on ship speed of advance?

Head seas

What refers to an underway adjustment in track and is intended to avoid or limit the effect of adverse weather conditions forecast to be encountered along the ship’s current track?

Diversion

Where do the success of ship weather routing depends upon?

Validity of forecasts

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