Final Exam: NN310 |2025 Update Actual exam|Complete Frequently Tested Questions And Verified Answers With Rationales|100% Accurate Answers | Already Graded A+

1/11/25, 7:08 PM Final Exam: NN310 |2025 Update Actual exam|Complete Frequently Tested Questions And Verified Answers With Rationales|1…




Final Exam: NN310 |2025 Update Actual
exam|Complete Frequently Tested Questions
And Verified Answers With Rationales|100%
Accurate Answers | Already Graded A+


Terms in this set (116)


1) determine port departure/arrival and date
2) Determine chart/pub requirements
•Discuss factors to be
3) Determine distance and SOA
considered for the
4) Plan the passage
voyage planning
5) Prepare to get underway
6) Underway

•Compute speed of SOA= Total Distance(NM)/ Total Time(HRs)Practice
advance, ETA and ETD with Practical Exercise
required in voyage
planning

The shortest distance between two points on Earth
is a Great Circle.
•Know how the Navigator
determines a route that A Rhumb line is a straight line between two points
covers a great distance on Earth
using Great Circles and
Rhumb lines 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 YXWVUTSRQPON-Z-ABCDEFGHIKLM

•Determine time zones DDTTTTZMMYY
and make time zone
conversions




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1. MovRep
•Discuss in-port and pre- 2. OTSR (Optimum Track Ship Routing) (includes
underway messages and requesting WEAX)
arrangements 3. Logistics Request (LOGREQ) message
4. Navigation Brief (NAV Brief)




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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.
•Discuss underway
-Every day at 0800 local, the ship sends an updated
messages, reports and
position and current weather status. If she will
orders
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
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