NN310 FINAL EXAM QUESTIONS | TESTED AND
PROVEN ANSWERS | LATEST UPDATE 2024/2025
100% (GRADE A+)
•Discuss factors to be considered for the voyage planning
Ans>>
1) determine port departure/arrival and date
2) Determine chart/pub requirements
3) Determine distance and SOA
4) Plan the passage
5) Prepare to get underway
6) Underway
•Compute speed of advance, ETA and ETD required in voyage planning
Ans>> SOA= Total Distance(NM)/ Total Time(HRs)Practice with Practical Exercise
•Know how the Navigator determines a route that covers a great distance using Great Circles
and Rhumb lines
Ans>> The shortest distance between two points on Earth is a Great Circle.
1
,A Rhumb line is a straight line between two points on Earth
By using a composite approach of both GC and RL, a navigator can determine the quickest route
between two points that are very far apart.
•Know the 25 time zones
Ans>> YXWVUTSRQPON-Z-ABCDEFGHIKLM
•Determine time zones and make time zone conversions
Ans>> DDTTTTZMMYY
•Discuss in-port and pre-underway messages and arrangements
Ans>> 1. MovRep
2. OTSR (Optimum Track Ship Routing) (includes requesting WEAX)
3. Logistics Request (LOGREQ) message
4. Navigation Brief (NAV Brief)
2
,•Discuss underway messages, reports and orders
Ans>> Prior to going underway, a navigator must route up a Movement Report (MOVREP)
twenty-four to forty-eight hours prior to departure. This MOVREP tells where the ship is going,
speeds, waypoints, times, and stops. Embedded in the MOVREP is a Plan of Intended Movement
(PIM) that describes where your ship intends to be based on SOA and ETA.
MOVREP: Upon arrival in port, or when +/- 4 hours outside of Plan of Intended Movement, or Fail
to Sail.
Included in a MOVREP is the WEAX and OTSR
•WEAX (Weather Forecast)
-If you request WEAX along your PIM (Plan of Intended Movement), you will get daily weather
forecasts for your location and forecasts up to 72 hours out, from your closest METOC Center.
•OTSR (Optimum Track Ship Routing)
-Requested to the Fleet Weather Center (FWC-N/SD) 7-10 days prior to u/w for voyages
>1500 NM.
3
, -Every day at 0800 local, the ship sends an updated position and current weather status. If she
will encounter severe weather along the route, FWC will send her a safer alternate route to
follow.
•Logistics Request (LOGREQ) message
-Routed through every Department Head
-Submitted prior to arrival/departure in a port
-Indicates what services you will require
Includes, ETA, ETD, fuel, water, food, tug and pilot services, etc
•Navigation Brief (NAV Brief)
-Given to all concerned watch standers involved in a Sea & Anchor detail within 24 hours of the
detail being set.
-Written and briefed by Navigator, with contributions by the 1st LT, Operations Officer, and
Chief Engineer. Signed by the Commanding Officer.
-Retained onboard for 1 year
Position Report
4
PROVEN ANSWERS | LATEST UPDATE 2024/2025
100% (GRADE A+)
•Discuss factors to be considered for the voyage planning
Ans>>
1) determine port departure/arrival and date
2) Determine chart/pub requirements
3) Determine distance and SOA
4) Plan the passage
5) Prepare to get underway
6) Underway
•Compute speed of advance, ETA and ETD required in voyage planning
Ans>> SOA= Total Distance(NM)/ Total Time(HRs)Practice with Practical Exercise
•Know how the Navigator determines a route that covers a great distance using Great Circles
and Rhumb lines
Ans>> The shortest distance between two points on Earth is a Great Circle.
1
,A Rhumb line is a straight line between two points on Earth
By using a composite approach of both GC and RL, a navigator can determine the quickest route
between two points that are very far apart.
•Know the 25 time zones
Ans>> YXWVUTSRQPON-Z-ABCDEFGHIKLM
•Determine time zones and make time zone conversions
Ans>> DDTTTTZMMYY
•Discuss in-port and pre-underway messages and arrangements
Ans>> 1. MovRep
2. OTSR (Optimum Track Ship Routing) (includes requesting WEAX)
3. Logistics Request (LOGREQ) message
4. Navigation Brief (NAV Brief)
2
,•Discuss underway messages, reports and orders
Ans>> Prior to going underway, a navigator must route up a Movement Report (MOVREP)
twenty-four to forty-eight hours prior to departure. This MOVREP tells where the ship is going,
speeds, waypoints, times, and stops. Embedded in the MOVREP is a Plan of Intended Movement
(PIM) that describes where your ship intends to be based on SOA and ETA.
MOVREP: Upon arrival in port, or when +/- 4 hours outside of Plan of Intended Movement, or Fail
to Sail.
Included in a MOVREP is the WEAX and OTSR
•WEAX (Weather Forecast)
-If you request WEAX along your PIM (Plan of Intended Movement), you will get daily weather
forecasts for your location and forecasts up to 72 hours out, from your closest METOC Center.
•OTSR (Optimum Track Ship Routing)
-Requested to the Fleet Weather Center (FWC-N/SD) 7-10 days prior to u/w for voyages
>1500 NM.
3
, -Every day at 0800 local, the ship sends an updated position and current weather status. If she
will encounter severe weather along the route, FWC will send her a safer alternate route to
follow.
•Logistics Request (LOGREQ) message
-Routed through every Department Head
-Submitted prior to arrival/departure in a port
-Indicates what services you will require
Includes, ETA, ETD, fuel, water, food, tug and pilot services, etc
•Navigation Brief (NAV Brief)
-Given to all concerned watch standers involved in a Sea & Anchor detail within 24 hours of the
detail being set.
-Written and briefed by Navigator, with contributions by the 1st LT, Operations Officer, and
Chief Engineer. Signed by the Commanding Officer.
-Retained onboard for 1 year
Position Report
4
