Chart / Pos fixing Quiz

Question 1

occulting means?

Answer 1

more light than darkness

Question 2

What does FR mean on Navigational Chart

Answer 2

Fixed Red

Question 3

What is air draft measured from

Answer 3

HAT

Question 4

Drying heights are measured from ?

Answer 4

CD

Question 5

What is an isogonal chart ?

Answer 5

shows variation over the area represented on chart

Question 6

You go over shallow patch which is not marked on chart. What should you do?

Answer 6

Report to UKHO

Question 7

Straight line on Gnomonic Chart is

Answer 7

Great circle

Question 8

Letters PA on chart?

Answer 8

Position Approximate

Question 9

What do waves indicate on charts

Answer 9

Tidal overfalls rips

Question 10

Chart symbols and appreciations can be found on?

Answer 10

NP5011 or US chart 1

Question 11

PI lines

Answer 11

• are used to check if you are port or stbd on intended track

Question 12

DR includes?

Answer 12

nothing, is just speed through water and course steered

Question 13

Bearing of an object gives a

Answer 13

position line

Question 14

How would you make sure you don’t drag anchor over night ?

Answer 14

Depth, Radar Range and Bearings, Visual Bearings, GPS

Question 15

Tables for VSA and HSA are found in what publication?

Answer 15

Norries

Question 16

To do a VSA what do you need?to do a VSA ?

Answer 16

1. Take bearing of Object
2. Get Height of Object from Chart or nautical almanac
3. Measure angle between top of object and waterline with sextant
4. Use Norries to calculate Range
5. Hence I have a range and bearing giving me a fix

Question 17

Make sure for Sextant reading 0 for what errors?

Answer 17

Side and Index error

Question 18

Where would instrument error be for marine sextant?

Answer 18

on certificate normally inside box