SAMSA Skipper Category B (Coastal, up to 40 nm) Exam (South Africa)

When plotting a course on a nautical chart, which tool is primarily used to transfer a bearing from a position to the compass rose to determine the true course?

• ADividers
• BParallel ruler
• CPencil
• DProtractor

Magnetic Variation is the angular difference between:

• ATrue North and Compass North
• BMagnetic North and Compass North
• CTrue North and Magnetic North
• DGrid North and True North

In IALA Region A buoyage system, a port-hand lateral buoy, when entering a harbour from seaward, would typically be coloured and have which topmark?

• ARed, with a red can topmark
• BGreen, with a green cone topmark
• CRed, with a red sphere topmark
• DGreen, with a green can topmark

If your vessel is heading True North at 6 knots and there is a current setting 090° True at 2 knots, what will be your vessel's Course Over Ground (COG) and Speed Over Ground (SOG)?

• ACOG 045° True, SOG 8 knots
• BCOG 000° True, SOG 4 knots
• CCOG 018.4° True, SOG 6.32 knots
• DCOG 071.6° True, SOG 6.32 knots

When measuring the distance between two points on a nautical chart, which of the following should you use?

• AThe vertical latitude scale on the side of the chart
• BThe horizontal longitude scale at the top or bottom of the chart
• CA specifically marked distance scale if present on the chart
• DThe speed scale on your logbook

A chart symbol displaying 'Fl(2) 10s 15m 10M' indicates a light with which characteristics?

• AA flashing light, 2 flashes every 10 seconds, located 15 meters high, visible for 10 naut…
• BA fixed light, 2 flashes per minute, with a range of 15 nautical miles, visible from 10 m…
• CA group flashing light, 2 flashes in a group, repeating every 10 seconds, with its focal…
• DA single flashing light, lasting 2 seconds, repeating every 10 minutes, at a height of 15…

What is the primary effect of a falling tide on charted depths?

• AIt causes charted depths to increase.
• BIt has no effect on charted depths as they are based on datum.
• CIt causes the actual water depth to decrease below charted depths.
• DIt causes the actual water depth to increase above charted depths.

If your compass reads 090° and the chart states the Magnetic Variation is 5°W, what is the True bearing?

• A085° True
• B095° True
• C090° True
• D005° True

To establish a reliable position fix on a nautical chart using visual bearings, what is the minimum number of distinct, identifiable objects required?

• AOne
• BTwo
• CThree
• DFour

Before embarking on a coastal passage of up to 40nm, what is a crucial consideration for safe navigation?

• AEnsuring the vessel has enough fishing bait for the trip.
• BChecking the latest weather forecast, tides, and currents for the entire duration of the…
• CConfirming that all non-essential electronics are switched off to conserve battery.
• DHaving a detailed itinerary of every landmark to be seen during the journey.

On a nautical chart, what does a charted depth of '0.7' within a drying height area indicate?

• AThe depth of water is 0.7 metres at chart datum.
• BThe height of the land above Mean High Water Springs (MHWS) is 0.7 metres.
• CThe depth of water is 0.7 metres at Mean Low Water Springs (MLWS).
• DThe height of the exposed seabed above chart datum is 0.7 metres.

You are navigating a vessel and your magnetic compass reads 090°M. The chart states the magnetic variation for your area is 10°W (decreasing 0.1° annually). If the chart was printed 5 years ago, what is the true course (approximately)?

• A080.5°T
• B099.5°T
• C080°T
• D100°T

What is the primary advantage of using a 'running fix' for determining your vessel's position?

• AIt provides a highly accurate position using only one charted object.
• BIt eliminates the need for any electronic navigation equipment.
• CIt allows for position fixing when only one suitable navigational object is available.
• DIt is simpler and quicker to execute than a conventional two-bearing fix.

When calculating the tidal height for a specific time and location using tidal tables, what information is typically needed IN ADDITION to the time of observation?

• AThe vessel's draft and air draught.
• BThe moon's phase and current barometric pressure.
• CThe chart datum of the area and the nearest standard port's high/low water times and heig…
• DThe longitude of the vessel's position and the time zone.

When calculating a 'Course to Steer' to make good a desired 'Course Over Ground' while experiencing a tidal stream, what factors must be considered?

• AMagnetic variation and compass deviation only.
• BThe vessel's speed through water, the tidal stream's set and rate, and leeway.
• CThe vessel's speed over ground and the depth of water.
• DThe predicted tidal height and the time of high water.

You observe a lighthouse displaying a light characteristic of 'Fl(3) 15s 20m 10M'. What does 'Fl(3)' specifically indicate?

• AThe light flashes three times per minute.
• BThe light is obscured three times per cycle.
• CThe light shows a group of three flashes.
• DThe light has a nominal range of 3 nautical miles.

You are navigating in IALA Region A. You see a green buoy with a conical topmark. What does this buoy indicate?

• AThe port (left) side of the channel when entering from seaward.
• BA safe water mark, indicating navigable water all around.
• CA preferred channel to starboard (right).
• DThe starboard (right) side of the channel when entering from seaward.

What is 'compass deviation' and why does it occur?

• AThe difference between True North and Magnetic North, caused by the Earth's magnetic fiel…
• BThe error in a magnetic compass caused by magnetic interference from a vessel's own metal…
• CThe difference between the compass reading and the actual heading of the vessel over the…
• DThe error introduced by the tidal stream pushing the vessel off course.

While using a GPS receiver for coastal navigation, what is a potential source of position inaccuracy that a mariner should be aware of?

• AThe magnetic variation in the area.
• BIncorrectly entered compass deviation.
• CSignal loss due to physical obstructions or jamming.
• DThe Earth's curvature limiting satellite visibility.

During passage planning for a 40nm coastal voyage, what is a critical consideration regarding weather forecasts?

• ATo obtain a general long-range forecast for the entire season.
• BTo ensure the vessel has adequate heating and cooling systems for comfort.
• CTo identify potential adverse conditions (e.g., strong winds, heavy seas, fog) that could…
• DTo determine the best time for fishing or recreational activities during the trip.

A rapid and significant drop in atmospheric pressure, as indicated by a barometer, typically suggests which of the following?

• AImproving weather conditions with clear skies.
• BCalm seas and light winds.
• CThe approach of a low-pressure system and potentially severe weather.
• DA stable high-pressure system dominating the area.

According to the Beaufort Scale, what wind speed range (in knots) is associated with a 'Fresh Breeze' (Force 5)?

• A7-10 knots
• B11-16 knots
• C17-21 knots
• D22-27 knots

Which type of cloud is commonly associated with a stable atmosphere and often indicates fair weather?

• ACumulonimbus
• BAltostratus
• CCirrus
• DNimbostratus

During the day, a 'sea breeze' typically blows from the sea towards the land. What is the primary cause of this phenomenon?

• AThe Coriolis effect.
• BThe gravitational pull of the moon.
• CThe land heating up faster than the sea, creating a localized low-pressure area over land.
• DThe sea cooling down faster than the land, creating a high-pressure area over the sea.

Which conditions are most conducive to the formation of advection fog at sea?

• AWarm, moist air moving over a warmer sea surface.
• BCold, dry air moving over a warmer sea surface.
• CWarm, moist air moving over a colder sea surface.
• DStrong winds and high atmospheric pressure.

On a marine weather chart, what do closely spaced isobars (lines of equal atmospheric pressure) indicate?

• ALight winds and calm conditions.
• BA stable high-pressure system.
• CStrong winds and a steep pressure gradient.
• DThe presence of a warm front.

Which of the following is a primary characteristic of a tropical cyclone (hurricane/typhoon) in the Northern Hemisphere?

• AWinds rotating clockwise around a high-pressure center.
• BWinds rotating counter-clockwise around a low-pressure center.
• CAlways moving from east to west in a straight line.
• DTypically forming over cold ocean waters.

When a cold front passes, what is a typical sequence of weather changes observed?

• AGradual temperature increase, light rain, then clearing.
• BSteady pressure rise, light winds, then decreasing cloudiness.
• CSudden drop in temperature, shift in wind direction, often with squalls or heavy showers,…
• DWarm, moist air, followed by prolonged moderate precipitation, and then a gradual tempera…

A sudden increase in swell size and frequency without local wind changes often indicates:

• AThe approach of a stable high-pressure system.
• BA localized shift in current direction.
• CThe presence of a distant storm or strong wind system.
• DA decrease in atmospheric pressure locally.

Which of the following is considered the most reliable source of up-to-date, localized marine weather forecasts for a vessel at sea?

• AGeneral television weather reports for land areas.
• BObserving cloud patterns and swell direction only.
• CVHF/MF/HF marine radio weather broadcasts (e.g., NAVTEX, Marine Forecasts) and satellite…
• DChecking a barometer once a day.

Which of the following is considered the most reliable source of up-to-date marine weather information when offshore?

• AVisual observation of clouds and sea state
• BBroadcast marine weather forecasts via VHF or SSB radio
• CNewspaper weather section from the previous day
• DConsulting a general terrestrial weather app

A rapid fall in atmospheric pressure over a short period generally indicates which of the following?

• AImproving weather conditions and stable air
• BApproaching fair weather and calm seas
• CDeteriorating weather, possibly strong winds and precipitation
• DStable high-pressure system forming

When a weather forecast states the wind is 'Westerly', from which direction is the wind blowing?

• ATowards the west
• BFrom the west
• CTowards the east
• DFrom the east

Which type of cloud is generally associated with fair weather and often appears as detached, white, fluffy clouds?

• ANimbostratus
• BCirrus
• CCumulus
• DStratus

What is generally true about weather within a high-pressure system?

• AIt typically brings strong winds and heavy rainfall.
• BIt is associated with clear skies, light winds, and stable conditions.
• CIt always indicates the approach of a tropical cyclone.
• DIt causes sudden and dramatic temperature drops.

A 'Gale Warning' issued by a marine weather service indicates that sustained winds are expected to be within which range (on the Beaufort Scale)?

• AForce 4 to 5 (11-21 knots)
• BForce 6 to 7 (22-33 knots)
• CForce 8 to 9 (34-47 knots)
• DForce 10 to 11 (48-63 knots)

What is the primary danger associated with fog for a vessel at sea?

• ARapid onset of severe thunderstorms
• BReduced visibility leading to collision risk
• CSignificant increase in sea temperature
• DSudden strong currents

On a weather map, what does a solid line with triangles pointing in the direction of movement typically represent?

• AA warm front
• BA cold front
• CAn occluded front
• DA stationary front

What is a 'sea breeze' and when does it typically occur?

• AA strong offshore wind occurring during the night due to land cooling faster than the sea.
• BA local wind blowing from the sea towards the land, occurring during the day due to diffe…
• CA global wind pattern caused by the Earth's rotation, occurring year-round.
• DA wind caused by major storm systems, unpredictable in its timing.

Upon receiving a 'Severe Weather Warning' for your intended area of operation, what is the most appropriate action for a skipper to take?

• AProceed with the planned voyage as scheduled, assuming the warning might not apply direct…
• BAnchor in an exposed bay to weather the storm, as it offers a quick escape.
• CSeek immediate shelter, postpone the voyage, or alter course to avoid the warned area.
• DIncrease speed to outrun the weather system before it arrives.

When anchoring in strong currents or high winds, what is the generally recommended scope for a secure anchorage?

• A2:1 to 3:1
• B4:1 to 5:1
• C6:1 to 10:1
• D1:1

Upon discovering a person has fallen overboard, what is the immediate action a skipper should take?

• AImmediately turn the vessel back towards the person at full speed.
• BSound an alarm, throw a lifebuoy towards the person, and assign a spotter.
• CBroadcast a distress call on VHF radio immediately.
• DDeploy the dinghy to retrieve the person.

When approaching a dock with a strong current pushing your vessel towards it, what is the most effective way to maintain control and prevent a collision?

• AApproach the dock at a high angle and use reverse thrust at the last moment.
• BApproach the dock with the bow pointed slightly upstream (against the current) and use mi…
• CApproach the dock parallel to it, allowing the current to push you in.
• DApproach the dock from downstream, using the current to slow you down.

What is the primary risk associated with a fouled propeller and what should be the immediate action?

• AIncreased fuel consumption; attempt to clear it by increasing engine RPM.
• BLoss of propulsion and steering control; shift to neutral, turn off the engine, and asses…
• COverheating of the engine; immediately engage full reverse.
• DDamage to the propeller blades; try to dislodge the fouling by rapidly alternating betwee…

When navigating in heavy weather and rough seas, what is generally the safest course of action for a small vessel?

• AHead directly into the waves at full speed to get through them quickly.
• BRun before the sea (with waves coming from astern) as fast as possible to outrun them.
• CMaintain a moderate speed, altering course to take waves at an angle on the bow (bow quar…
• DAnchor immediately, regardless of depth or proximity to shore.

According to the International Regulations for Preventing Collisions at Sea (COLREGs), when two power-driven vessels are crossing and there is a risk of collision, which vessel is the 'give-way' vessel?

• AThe vessel that has the other vessel to its port side.
• BThe vessel that has the other vessel to its starboard side.
• CThe vessel that is smaller and less maneuverable.
• DThe vessel that is heading into the wind.

When docking a vessel with a single screw propeller, why is it often advantageous to approach the dock with a slight angle, particularly if the wind or current is pushing you off?

• ATo allow more time to prepare lines and fenders.
• BTo use prop walk to your advantage for better control.
• CTo create a 'cushion' of water between the vessel and the dock.
• DTo present a smaller profile to the wind.

What is the primary purpose of fenders when docking or alongside another vessel?

• ATo act as navigational aids for other vessels.
• BTo provide buoyancy for the vessel.
• CTo protect the hull from impact and abrasion.
• DTo reduce the vessel's speed during docking.