New T-Nav Test 500 ton OSV Mate

**xavierts29** · October 5th, 2011, 01:32 AM

Does anyone have any info on the new T-Nav Test for a mate OSV 500 Ton? And Can anyone tell me where to find the solutions for these problems?

You are to sail from Elizabethport, N.J., on 22 May 1983, with a maximum draft of 28 feet. You will pass over an obstruction in
the channel near Sandy Hook that has a depth of 26.5 feet. The steaming time from Elizabethport to the obstruction is 1h 40m.
What is the earliest time (ZD + 4) you can sail on the afternoon of 22 May and pass over the obstruction with 2 feet of clearance?
A. 1454
B. 1424
C. 1405
D. 1342

You want to transit Pollock Rip Channel, MA, on 6 April 1983. What is the period of time around the 0955 (ZD +5) slack in which
the current does not exceed 0.3 knot?
A. 0911 to 0955
B. 0940 to 1010
C. 0955 to 1044
D. 0935 to 1017

Thanks

**water** · October 5th, 2011, 03:45 AM

Captain Joe's CD has great solutions to all the problems. If those are new problems, they may not be there yet, but there are plenty of similar problems with similar solutions.

Good luck!

**Ea$y Money** · October 5th, 2011, 05:01 AM

Capt. Joe has solutions but I would not call them "great". I used his software to get my ticket and it is the most economical way in my opinion, but there are times that require extra effort on your part to decipher the solutions. Lapware rocks, but is pricey. I used it for 2 months and their solutions are much better. Especially the hurricane avoidance and sling problems.

How much do you know about tides? Currents? I can help if you tell me where you are stuck in these problems. The current problem is explained in the tide and current book and is fairly easy after you work a couple. The tide problem is normal with the added fun of allowing for transit time. Work it like normal then factor in the time it takes to travel. Assuming you know how to solve for the obstruction part.

**xavierts29** · October 5th, 2011, 05:41 AM

Originally Posted by Ea$y Money

Capt. Joe has solutions but I would not call them "great". I used his software to get my ticket and it is the most economical way in my opinion, but there are times that require extra effort on your part to decipher the solutions. Lapware rocks, but is pricey. I used it for 2 months and their solutions are much better. Especially the hurricane avoidance and sling problems.

How much do you know about tides? Currents? I can help if you tell me where you are stuck in these problems. The current problem is explained in the tide and current book and is fairly easy after you work a couple. The tide problem is normal with the added fun of allowing for transit time. Work it like normal then factor in the time it takes to travel. Assuming you know how to solve for the obstruction part.

On tide problems I can work those, where do you factor in the transit time? I've tried to ad it and subtract it from the answer. As far as the current problem that one has me stumped from the jump I know how to work the velocity current problems but these ones they have thrown in have me completely lost. By the way thanks for helping with the other problem the other day. That was spot on.

**Ea$y Money** · October 5th, 2011, 06:19 AM

scan0027.pdf scan0026.pdf

See attached chicken scratch.

**xavierts29** · October 5th, 2011, 06:44 AM

They won't come up on this site can you send them to xavierts29@gmail.com

**Carlisle Lucas** · October 6th, 2011, 03:22 PM

Originally Posted by xavierts29

Does anyone have any info on the new T-Nav Test for a mate OSV 500 Ton? And Can anyone tell me where to find the solutions for these problems?

You are to sail from Elizabethport, N.J., on 22 May 1983, with a maximum draft of 28 feet. You will pass over an obstruction in
the channel near Sandy Hook that has a depth of 26.5 feet. The steaming time from Elizabethport to the obstruction is 1h 40m.
What is the earliest time (ZD + 4) you can sail on the afternoon of 22 May and pass over the obstruction with 2 feet of clearance?
A. 1454
B. 1424
C. 1405
D. 1342

You want to transit Pollock Rip Channel, MA, on 6 April 1983. What is the period of time around the 0955 (ZD +5) slack in which
the current does not exceed 0.3 knot?
A. 0911 to 0955
B. 0940 to 1010
C. 0955 to 1044
D. 0935 to 1017

Thanks

These problems can be solved using the tide and current tables 1983.

The first one you need to figure the depth over the obstruction you need (Height of tide 3.5ft ) and when that will occur based on Sandy Hook and then track backwards your 1 hour 40 minutes to get your sailing time. Remeber ZD+4 is Daylight Savings Time! Sounds Easy right? Well I couldn't get that question right either.....Altough I had no problems with any other tide problems. I really believe this question has the incorrect answer on the coast guard data base....Try seasources.net.

The second one is solved using the charts at the back of the tidal currents tables concerning duration of slack water...it's pretty easy if you follow the instructions on the chart. You have to have the books though. I got my 500 Master Inland this summer and remember studying both these questions. I only had a few on the actual exam though. The CFRs are what stand out in my mind as being the toughest part.....Good Luck, you can do it.