U/W OOD Flashcards
What is the U/W OOD’s responsibilities?
- in charge of the ships safety and performance of duties
What is the CONN responsible for?
Is responsible for the movement of the ship, navigation, monitoring vessel traffic, collision avoidance, contact reports, etc
What is the DECK responsible for?
Is responsible for taking reports, monitoring communications, POD, etc
What is the EOW responsible for?
To assist the OOD in operating and maneuvering the ship and ensuring systems are operational
What is the CIC Watch Supervisor responsible for?
Is responsible to maintain awareness of the surface and air tactical situation
What is the XO’s responsibility?
Is responsible for the general duties of the ship. XO may assume charge of the deck
What is the Navigator’s responsibilities?
Usually the OPS, may order course and speed changes
What is the Tactical Action Officer responsible for?
The TAO, during GQ, OOD is subordinate to the TAO. TAO is in charge of fighting the ship
What is the best indicator for Risk Of Collision?
A visual bearing drift by alidade is the best indicator of ROC
What is Extremis?
Point in which collision cannot be avoided by the action of the give way vessel alone. 1600 yrs or 12x the length of our vessel
What shall you do if you reach Extremis?
- pipe CO to the bridge
- sound 5 or more short blasts and attempt comms with the other vessel
- endure the helm and engines are ready for maneuver
- check for any hazards to navigation or anything else for a turn to STBD
- at 1500 yards sound another 5 or more short blasts, turn the STBD to match the vessels true course and increase speed. This will reduce the rate of closure, increase the rate of turn, and provide the other vessel with a visible clue of what your doing
What are the two modes of navigation for the CGC KIMBALL?
- Automated Plotting - installed eNav System with automatic positioning input, used as a primary means of navigation
- Manual Plotting - installed eNav System with manual positioning input, used as primary means of navigation
Or, traditional paper navigation, using manual positioning input, is used as primary means of navigation, usually due to eNav failure.
What is another planned use of paper navigation?
Is done for proficiency and training or when there is a lack of electronic chart availability
Seaman’s Eye
Is defined as navigation based on an extensive knowledge of the local area to include aids to navigation, terrestrial landmarks, and depth contours. If it’s coupled with all other available navigational tools, can be used by COXN’s as a primary method of boats navigation and to maintain the situational awareness of the boats position. For cutters it can be used to correlate what is being displayed on electronic navigation systems with what’s being observed visually
What are the preferred electronic charts for CG navigation systems?
Vector charts
What are the different electronic charts we have?
Vector charts - consists of points, lines, and data that represent real world objects and are stored as a separate data file that can be queried by chart users
- ENC - electronic nav chart
- IENC - inland electronic nag chart
- DNC - digital nautical chart
Raster charts - are merely a scanned image of a chart. It’s not layered so you cannot adjust filters, apply corrections, set alarms or query raster chart data for amplifying information
What are Raster charts?
It’s a digital image of the corresponding paper chart
LOP
Lines of position
What are your types of fixes?
Electronic fix
- lat / long
- intersection of 3 or more radar ranges or a combination of visual LOP’s and radar ranges obtained simultaneously
Visual fix
- intersection of 3 or more LOP’s or LOP’s from celestial bodies if properly advanced from the time of observation
Running fix
- used when limited objects are available to take LOP’s and the vessel remains on a constant course. This type of fix advances or retires an LOP taken from the same object at two different times to fix a vessels position
What can be done to verify position?
- Radar and chart matching
- radar overlay on eNav System
- Fathometer to match observed depth with charted depth
When evaluating fixes, what will u do?
Analyze the fix with due regard to accuracy, relation to the vessels intended track, proximity to shoal water or other nav hazards, environmental conditions and their effects on the vessels intended track and any other situational dependent factors that must be considered for safe navigation
Set and drift
Is the cumulative effect of wide, tide and current on a vessels movement they the water.
Set - is the direction these forces have moved the vessel
Drift - is how these forces effect the vessels planned speed of the vessel
Advance and Transfer
Deviations from the intended track and track speed may occur from the turning characteristics of the vessel
Advance - is the distance along the vessels current track it will travel during a turn
Transfer - is the distance perpendicular, or the slide, a vessel will experience as it travels through a turn
What is dead reckoning?
The process of plotting a course from a known position, at a given speed and duration of time, to determine a vessels anticipated or estimated position along a track line. When compared to the vessels known or fixed position at a specific time, it enables personnel to determine the effect of external influences.
What are the 6 rules for dead reckoning?
- least everyone hour on the hour
- every course change
- every speed change
- after each fix or running fix
- when obtaining a single LOP
- new course line from each fix or running fix
Navigational Draft
30 feet
Safety contour on charts are set at what?
30 feet
9 meters
5 fathoms
Shallow contour will be set at?
30 feet
Safety depth will be set at?
30 feet
Length overall
418’ 7”
Beam
54 feet
Masthead light
Fixed - 152 feet
Safe vertical clearance - 160 feet
Tactical diameter
551 yards
Full load draft
22’ 9”
Height of bridge above the waterline
47 feet
Location of GPS antenna
OSRP (GOS offset)
2 feet forward of frame 67
Distance from hawsepipe to alidade
104 feet
Distance from hawsepipe to stern
395 feet
Distance from hawsepipe to GPS antenna?
94 feet
Distance from radar antenna to hawsepipe?
125 feet
Distance from GPS antenna to stern?
304 feet
Distance from radar antenna to stern?
273 feet
What is considered shoal waters?
All waters 30 feet (9 meters or 5 fathoms) or less
What is considered restricted waters?
All waters within 3nm of any navigational hazard or within 3nm of shoal water
What is considered coastal waters?
All waters more than 3nm but less than 10nm from any navigational hazard or shoal water
What is considered piloting waters?
Piloting waters and considered as coastal waters
What is cool snide red open ocean?
All waters greater than 10 no from any navigational hazard or shoal water
What is your fix interval for Restricted Waters?
- fix at least every 3 minutes
- dr’s at least 2 fix intervals in advance
- set and drift computed every fix and applied to the next dr
- Primary and secondary plots shall use the same fix interval and take fixes at the same time for comparison
- primary position source must be compared to an unrelated position source ( radar overlay, chart matching, visual/radar LOP) and logged every other fix
What is your fix interval for Coastal Waters?
- fixes at least every 6 minutes
- dr’s at least 2 fix intervals in advance
- set and drift computed at every fix and applied to the next DT
- primary and secondary plots shall use the same fix interval and take fixes at the same time for comparison
- primary positioning source must be compared to an unrelated position source ( radar overlapping, chart matching, visual/radar LOP) and logged every hour
What is the fix interval for Open Ocean?
- fixes at least every 30 minutes
- dr’s at least 2 fix intervals in advance, plotting dr’s on paper charts are not required for BARPAT or Box OPS in Open Ocean Water
- set and drift computed every fix and applied to the next dr
- primary and secondary plots shall use the same fix interval and takes fixes at the same time for comparison
- primary position source must be compared to an unrelated position source ( radar overlay, chart matching, visual/radar LOP) and logged once per day
What is your fix interval at anchor?
- fixes are at least every 15 minutes
- a combination of a minimum of 4 visual and/or radar LOP’s shall be set up for each fix
- primary and secondary plots shall use the same fix interval and take fixes at the same time for comparison
Three things that must be on an electronic chart that will be used in restricted waters?
- true course
- magnetic course
- distance of the track leg
What shall u as the OOD verify on the paper charts used in restricted waters?
That they have been signed, or otherwise certified by the CO as being fully prepared, corrected and ready for use
When shall MOBOARDS be used?
For all contacts with a CPA of less than 3nm
What is your cross track error for restricted waters?
No more than 50 yards or half the width of the channel, whichever way is less
What is your cross track error for coastal waters?
1000 yards
What is your cross track error for open ocean?
2000 yards
