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joegrundman · 08-26-07, 06:01 AM

I'm glad you are making progress

I'd really get used to the fact that at 3 minutes, 15 seconds an object moves 100m for every knot of speed. It completely eliminates the need for any calculation. If in that interval the target has moved 700m/ 0.7km, the speed is 7kts. If the target moved 0.9km the speed is 9 knots.

It is a very quick process to get used to taking surface measurements at this time interval.

Assuming you are on the surface, click on the WO and ask for range and bearing to target, and promptly start the stopwatch. Press F5 to get to the navmap and quickly draw it in on the map. If you have the whiz wheel mentioned above you can equally quickly obtain the true bearing to target relative to north. otheriwse, just add the reported bearing to your present course.

When the stopwatch reaches 3 min 15secs, do it again.

08-26-07, 06:01 AM	#10
joegrundman Ocean Warrior Join Date: May 2007 Posts: 2,689 Downloads: 34 Uploads: 0	I'm glad you are making progress I'd really get used to the fact that at 3 minutes, 15 seconds an object moves 100m for every knot of speed. It completely eliminates the need for any calculation. If in that interval the target has moved 700m/ 0.7km, the speed is 7kts. If the target moved 0.9km the speed is 9 knots. It is a very quick process to get used to taking surface measurements at this time interval. Assuming you are on the surface, click on the WO and ask for range and bearing to target, and promptly start the stopwatch. Press F5 to get to the navmap and quickly draw it in on the map. If you have the whiz wheel mentioned above you can equally quickly obtain the true bearing to target relative to north. otheriwse, just add the reported bearing to your present course. When the stopwatch reaches 3 min 15secs, do it again. __________________ "Enemy submarines are to be called U-Boats. The term submarine is to be reserved for Allied under water vessels. U-Boats are those dastardly villains who sink our ships, while submarines are those gallant and noble craft which sink theirs." Winston Churchill