QUESTIONS WITH ANSWERS GRADED A+ 2025/2026
I'm planning a dive in moderately low visibility (2-3 meters/2-10 feet) and i want to
maintain buddy contact. Skill in underwater navigation will help me with this.
True/false - true
When measuring distance with kick cycles, you count when... - the same leg returns to
the same position
When estimating distance with elapsed time, you measure how long it takes to cover a
fixed distance while swimming... - at a normal relaxed pace.
My buddy and i are diving from a boat that's moored in an area popular for diving.
Which of the following predive observations may assist us with natural navigation during
the dive? - 1. Divemaster tells us the boat is pointed directly into the current.
2. It's 1530 hours and the sun is setting in the west.
3. There's a large buoy moored directly behind the boat.
4. The boat's depth finder shows 15 meters/50 feet directly under the boat.
To maintain my orientation and benefit from natural navigation , descend in what
position? - head above feet facing travel direction
While navigating with natural references, which of the following can help me? - 1. Light
and shadows
2. Water movement
3. Bottom composition and formations
4.plants and animals
5. Noise/sounds
I'm navigating with a compass. To maintain an accurate heading, keep the
____________ aligned with my body's centerline. - lubber line
With a standard analog compass, the __________ always indicates your travel
direction. The _________ always points to magnetic north. - lubber line, compass
needle
To set a reciprocal heading, turn the compass to a heading that is __________ from the
original heading? - 180 degrees
During a dive, i'm following my compass but my sense of direction makes it feel like i
should be going more to the right. Without any other information, the best tip would be
to.... - trust the compass
Which of the following usually make compass use more effective? - 1. Practice on land
2. Allow for current effects
, 3. Navigate around obstacles
4. Midwater, your buddy monitors depth while you navigate
5. Do not swim rapidly
Which of the following factors would i consider when determining my personal deep-
diving depth limit? - 1. Environmental conditions
2. My physical/psychological fitness
3. The effect of previous dives on my no stop limit
4. Distance from emergency care
5. My buddy's personal limits
It's summer and i've been diving in the local area for several days, reaching a maximum
depht of 12 meters/40 feet. Today my buddy and i plan to dive to 30 meters/100 feet.
Which of the following statements is true? - my exposure suit may not be adequate.
Which pieces of specialized equipment are recommended for deep diving? - 1.
Emergency breathing equipment
2. Underwater light
When descending into deep water, the recommended general body orientation is...? -
head above feet
My buddy and i are ascending from deep water. To ascend at a proper rate, we....? - 1.
Ascend along a reference line or upward slope
2. Check our computers ever meter/few feet
3. Maintain buoyancy control by adjusting our bcd's frequently
My buddy and i lose our way on a deep dive and must surface without a reference.
Steps for doing this include....? - 1. Using our computers to guage a proper ascent rate
2. Adjusting oour buoyancy frequently
The primary way i avoid low-on-air or out-of-air emergencies on a deep dive is to limit
dive time to 30 minutes.
True/false - false/check your remaining gas supply frequently
My buddy and i are making a safety stop while ascending from a boat dive. The seas ar
calm but there's a current, so we're holding on to the mooring line. Ideally , we hold the
linse so 5 meters/15 feet is at ____________ depth, and stay for ________ minutes or
longer. - chest/three
My buddy and i are at 33 meters/110 feet. I feel intoxicated and notice i have trouble
concentrating when i try to read my computer. To alleviate this, i should... - ascend to a
shallower depth until symptoms/signs subside.
Choose all that are symptoms or signs of decompression sickness. - 1. Pain in arm,
legs or torso