# 200 ton oceans study materials **URL:** \ **Category:** Professional Mariner Forum\ **Created:** [November 18, 2017, 9:57pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649 "2017-11-18T21:57:22Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![chitownmaui](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@chitownmaui](https://forum.gcaptain.com/u/chitownmaui)\ **Post date:** [November 18, 2017, 9:57pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/1 "2017-11-18T21:57:22Z")
I have been approved to test for my oceans endorsement for my 200 ton master. Can anyone recommend study materials for this exam? Please don’t reply with any of the “why are you wasting your time with that license crap” I am planning to go for a bigger license when I acquire the sea time. In the meantime I want to get my oceans endorsement for my 200 ton license and would really appreciate any genuine responses with recommendations of study materials to prepare me for this exam. Thank you! ---
**Author:** ![Capt\_Phoenix](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.gcaptain.com/capt_phoenix/32/281_2.png) [@Capt\_Phoenix](https://forum.gcaptain.com/u/Capt_Phoenix)\ **Post date:** [November 18, 2017, 11:07pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/2 "2017-11-18T23:07:16Z")
Do you know celestial at all? Do you want to self study? You could take a celestial course that would count as the exam for that level license. ---
**Author:** ![Chopshopscotty](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@Chopshopscotty](https://forum.gcaptain.com/u/Chopshopscotty)\ **Post date:** [November 19, 2017, 6:55pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/3 "2017-11-19T18:55:03Z")
You need: One Pub 229 Vol 2 One 1981 Nautical Almanac One - nine dollar scientific calculator One- used star finder kit One pair of dividers One Slide ruler or triangle A few universal plotting sheets Or see the above post and pay for the class. A one month subscription to Lapware and a 1981 Bowditch 2 are optional. ---
**Author:** ![Capt\_Phoenix](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.gcaptain.com/capt_phoenix/32/281_2.png) [@Capt\_Phoenix](https://forum.gcaptain.com/u/Capt_Phoenix)\ **Post date:** [November 19, 2017, 10:16pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/4 "2017-11-19T22:16:02Z")
> [@Chopshopscotty](#): > > You need: > > One Pub 229 Vol 2 > > One 1981 Nautical Almanac > > One - nine dollar scientific calculator > > One- used star finder kit > > One pair of dividers > > One Slide ruler or triangle > > A few universal plotting sheets That’s what he needs to practice at home, the real question is what does he use to teach him the process. ---
**Author:** ![Chopshopscotty](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@Chopshopscotty](https://forum.gcaptain.com/u/Chopshopscotty)\ **Post date:** [November 20, 2017, 2:13am UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/5 "2017-11-20T02:13:07Z")
It sounds like chitownmaui only wants to study for exam in which case the list I gave him is accurate enough. However, learning the process depends on the boat he is on. Gyro Repeater? Azimuth Circle/Alidade? It’s too late in the year for him to get his money out of a 2017 almanac but he could perhaps buy the Davis Mark 25. ---
**Author:** ![Capt\_Phoenix](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.gcaptain.com/capt_phoenix/32/281_2.png) [@Capt\_Phoenix](https://forum.gcaptain.com/u/Capt_Phoenix)\ **Post date:** [November 20, 2017, 2:20am UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/6 "2017-11-20T02:20:03Z")
> [@Chopshopscotty](#): > > It sounds like chitownmaui only wants to study for exam in which case the list I gave him is accurate enough. I think what he means by study and what you mean by study are two different things. I figured by his question that he doesn’t know celestial at all yet, which means he needs a book that explains how to do the problems. Your list was just the material he needs to do the problems, not including anything to teach him **how** to do them. ---
**Author:** ![Capt\_Phoenix](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.gcaptain.com/capt_phoenix/32/281_2.png) [@Capt\_Phoenix](https://forum.gcaptain.com/u/Capt_Phoenix)\ **Post date:** [November 20, 2017, 3:19am UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/7 "2017-11-20T03:19:04Z")
I think Bowditch does a decent job of explaining the process, though I’ve never read it with no knowledge of celestial so I don’t know how comprehensible it would be to a beginner. Maybe Lapware has good instruction in it, I’ve never used it and I’m not sure if it’s meant as a refresher or complete teacher. Has anyone on here taught themselves celestial? ---
**Author:** ![john](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.gcaptain.com/john/32/5_2.png) [@john](https://forum.gcaptain.com/u/john)\ **Post date:** [November 20, 2017, 4:37am UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/8 "2017-11-20T04:37:26Z")
> [@Capt\_Phoenix](#): > > Has anyone on here taught themselves celestial? Yes, I pingponged between Dutton’s and Bowditch. ---
**Author:** ![Chopshopscotty](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@Chopshopscotty](https://forum.gcaptain.com/u/Chopshopscotty)\ **Post date:** [November 20, 2017, 11:20am UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/9 "2017-11-20T11:20:04Z")
I can’t lie, I needed an oceans guy to show me the final correction of amplitude on paper and another oceans guy to show me how to take an azimuth of the sun using a sextant. ---
**Author:** ![Diesel](https://avatars.discourse-cdn.com/v4/letter/d/6bbea6/32.png) [@Diesel](https://forum.gcaptain.com/u/Diesel)\ **Post date:** [November 20, 2017, 2:13pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/10 "2017-11-20T14:13:14Z")
> [@Capt\_Phoenix](#): > > Has anyone on here taught themselves celestial? yes ---
**Author:** ![Diesel](https://avatars.discourse-cdn.com/v4/letter/d/6bbea6/32.png) [@Diesel](https://forum.gcaptain.com/u/Diesel)\ **Post date:** [November 20, 2017, 2:14pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/11 "2017-11-20T14:14:44Z")
> [@Chopshopscotty](#): > > I can’t lie, I needed an oceans guy to show me the final correction of amplitude on paper and another oceans guy to show me how to take an azimuth of the sun using a sextant. First tip: You don’t use a sextant to take an azimuth. 2nd tip: be specific, ie an Amplitude of what? Sun or Moon? The correction is made to true bearing of bodies on the visible horizon and is different for different bodies. ---
**Author:** ![Capt\_Phoenix](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.gcaptain.com/capt_phoenix/32/281_2.png) [@Capt\_Phoenix](https://forum.gcaptain.com/u/Capt_Phoenix)\ **Post date:** [November 20, 2017, 2:35pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/12 "2017-11-20T14:35:36Z")
> [@Diesel](#): > > yes Are you going to chime in on this thread and explain how you did it and what material, if any, you used beyond the above list? ---
**Author:** ![Diesel](https://avatars.discourse-cdn.com/v4/letter/d/6bbea6/32.png) [@Diesel](https://forum.gcaptain.com/u/Diesel)\ **Post date:** [November 20, 2017, 2:38pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/13 "2017-11-20T14:38:10Z")
> [@Chopshopscotty](#): > > One Pub 229 Vol 2 > > One 1981 Nautical Almanac > > One - nine dollar scientific calculator > > One- used star finder kit > > One pair of dividers > > One Slide ruler or triangle > > A few universal plotting sheets -What is a slide ruler? I think that is something my grandfather used to do arithmetic. Do you mean a Parallel Rule? -What good is 1 triangle, wouldn’t he need a pair of those? ---
**Author:** ![Chopshopscotty](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@Chopshopscotty](https://forum.gcaptain.com/u/Chopshopscotty)\ **Post date:** [November 20, 2017, 2:41pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/14 "2017-11-20T14:41:33Z")
![85D6C08C-EE88-440C-900A-685C5E885EFD](https://us1.discourse-cdn.com/flex016/uploads/gcaptain_maritime_forum/original/2X/b/b9316e5879f065f426d8e50f5fce85e276dc02ed.png) Well, we did one. ---
**Author:** ![Chopshopscotty](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@Chopshopscotty](https://forum.gcaptain.com/u/Chopshopscotty)\ **Post date:** [November 20, 2017, 2:43pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/15 "2017-11-20T14:43:41Z")
Or just a regular ol ruler should do. ---
**Author:** ![Chopshopscotty](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@Chopshopscotty](https://forum.gcaptain.com/u/Chopshopscotty)\ **Post date:** [November 20, 2017, 2:45pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/16 "2017-11-20T14:45:56Z")
Sun at celestial horizon nav problems 1981, however, I did have an individual take me up to the gyro compass to get the gyro error at sunrise. ---
**Author:** ![Diesel](https://avatars.discourse-cdn.com/v4/letter/d/6bbea6/32.png) [@Diesel](https://forum.gcaptain.com/u/Diesel)\ **Post date:** [November 20, 2017, 2:46pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/17 "2017-11-20T14:46:38Z")
> [@Capt\_Phoenix](#): > > Are you going to chime in on this thread and explain how you dis it and what material, if any, you used beyond the above list? You’re lightning fast on the draw today. Pubs: Bowditch 1 and 2, Duttons, Pub 229, Nautical Almanac, Starpath’s Celestial Navigation Course and Starfinder Book Tools: Ti 30x, 2 Dividers, Parallel Rule, 2 Triangles, Starfinder, Pad of UPS, pencils and erasers. If you are serious about learning the craft, The best sextant you can afford, an artificial horizon, and a magnetic compass. ---
**Author:** ![Diesel](https://avatars.discourse-cdn.com/v4/letter/d/6bbea6/32.png) [@Diesel](https://forum.gcaptain.com/u/Diesel)\ **Post date:** [November 20, 2017, 2:52pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/18 "2017-11-20T14:52:46Z")
> [@Chopshopscotty](#): > > Well, we did one. I’m sorry I can’t read your work, for the sake of time I’ll take your word for it…but why? And I really don’t understand what you are trying to accomplish. You can determine True Azimuth without ANY sights all you need is a DR fix and accurate time. Doing an Azimuth alone is typically a tool to determine Gyro Error or magnetice deviation. ---
**Author:** ![Diesel](https://avatars.discourse-cdn.com/v4/letter/d/6bbea6/32.png) [@Diesel](https://forum.gcaptain.com/u/Diesel)\ **Post date:** [November 20, 2017, 2:53pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/19 "2017-11-20T14:53:54Z")
> [@Chopshopscotty](#): > > Sun at celestial horizon nav problems 1981, however, I did have an individual take me up to the gyro compass to get the gyro error at sunrise. Otherwise known as an Amplitude. Did he show you how to make the correction, for when it’s on the visible horizon? ---
**Author:** ![Chopshopscotty](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@Chopshopscotty](https://forum.gcaptain.com/u/Chopshopscotty)\ **Post date:** [November 20, 2017, 2:56pm UTC](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649/20 "2017-11-20T14:56:24Z")
None of this has anything to do with what the original poster needs to pass the test. [Next page](https://forum.gcaptain.com/t/200-ton-oceans-study-materials/46649.md?page=2)