Nav Stds

Question 1

Nav draft and safety contour

Answer 1

12ft

Question 2

Shallow contour

Answer 2

8ft

Question 3

Beam

Answer 3

19’ 4”

Question 4

Waterline length

Answer 4

80’ 10”

Question 5

Rpms not to use due to turbo design

Answer 5

1350-1650

Question 6

Shoal water

Answer 6

Less than 12’

Question 7

Restricted water (7)

Answer 7

• water 12’ or less
• within 1000yards of hazards
• areas with unpredictable tidal currents
• 100 yards to any approach where nav aids mark a defined channel
• mooring or anchoring evolutions
• areas defined in oic night orders or nav brief
• high traffic areas that impede maneuverability

Question 8

Piloting waters

Answer 8

Areas where there are significant proper radar contacts available for manual fixes on radar. Nantucket and Vineyard sound are piloting for this reason

Question 9

Coastal waters

Answer 9

1000yds to 2nm from hazards

All areas within vineyard and Nantucket sounds more than 500yds from hazards

Question 10

Open ocean

Answer 10

2nm plus from hazards

Question 11

Fix intervals

Answer 11

Shoal water - 3min max
Restricted - 6min (3 preferred)
Piloting - as appropriate for ^
Coastal - 15 min or half the time to expected shoal water
Open ocean - 30 min or half the time to shoal

Question 12

Routes

Answer 12

Shall be approved by oic
Xte shall be 5yds less than the width of channel, or 100yds in open
If route passes closer than 60yds from hazard, xte 5 yards less than distance

Question 13

Canal speed

Answer 13

10mph

8.5kts made good

Question 14

Cell phone underway

Answer 14

OOD may authorize if it operational in nature, distracting phone calls shall not be done on bridge

Question 15

Enav dr distance

Answer 15

At least 2 fix intervals depending on nav zone, normally set to 15minutes

Question 16

Transducer location and offset

Answer 16

Aft of frame 8 slightly to port
2.5ft higher than lowest part of ship so offset at -3ft
To calculate actual water depth add 6 to what transducer reads

Question 17

Hierarchy for charts

Answer 17

Enc
DNC
Rnc

Question 18

6 Rules of DR

Answer 18

Every hour on the hour
Speed change
Course change
Each fix or running fix
When obtaining single LOP
Plot course line from each fix/running fix

Question 19

Fix shapes

Answer 19

Dr semi circle
Electronic triangle
Visual circle
Lop square

Question 20

Notifying oic

Answer 20

Aton discrep
Changes in speed
In manual steering ivo shoal water
Potential distress
CPA less than 100yds
Major shipping traffic outside of designated lane
Closing on group of vessels with unpredictable course and speed
Contact of le interest or suspicious

Question 21

Format of report to CO (6)

Answer 21

Type of contact
Relative bearing and range
True course and speed 
Relative bearing and range at CPA
Rotr determination
Intended action

Question 22

Draft

Answer 22

5’ 8”