Equipment Blueprint: Ghostly Spyglass

[npc=93076] drops Equipment Blueprint: Ghostly Spyglass which unlocks [garrisonability=306]. This trait counters the naval threat [threat=88].

The equipment [garrisonability=306] can be acquired 3 ways:

1. 
   
2. Automatically, as the native trait of a new or upgraded rare or epic ship,
3. 
   
4. Looted, from a mission that has a ship with the [garrisonability=287] / [garrisonability=290] buff, or
5. 
   
6. Purchased, from [npc=93812] / [npc=94801] after it has been unlocked by learning the blueprint.
7. 
   

Additional traits: There are 7 Tanaan Jungle bosses who are guaranteed to drop specific Equipment Blueprints needed for the achievement Naval Mechanics.

Macro code for Tomtom users:
/way Tanaan Jungle 35.4 46.8 Belgork - Bilge Pump (Counters: Stormy Weather)
/way Tanaan Jungle 37.5 76.0 Captain Ironbeard (cave entrance) - Ghostly Spyglass (Counters: Cursed Crew)
/way Tanaan Jungle 44.6 37.8 Cindral the Wildfire - Ice Cutter (Counters: Icy Water)
/way Tanaan Jungle 45.8 47.0 Felsmith Damorka - Felsmoke Launcher (Counters: First Strike)
/way Tanaan Jungle 38.0 30.0 Savage Whale Shark - Trained Shark Tank (Counters: Minelayer)
/way Tanaan Jungle 60.2 21.0 Xanzith the Everlasting - High Intensity Fog Lights (Counters: Dense Fog)
/way Tanaan Jungle 37.0 33.0 Zoug the Heavy - True Iron Rudder (Counters: Evasive)
Additionally:

All rare creatures and NPCs in Tanaan now have a chance to drop a number of equipment blueprints for ships.
Source: Patch 6.2 Hotfixes: July 27

Protip 1: I use Macro Toolkit to avoid having to split macros into smaller parts. There are other addons that also allow this.

Protip 2: Want an easy way to reset your Tomtom arrow to the nearest boss on the list? Just type
/cway and voila! *

Note: An 8th boss, [npc=90284], (second boss in [zone=7545]) drops [item=128256] which counters [threat=80]. The blueprint drops on all levels of raid difficulty.

Note 2: What about the rest of them? Only 3 other blueprints are available in 6.2.0. They come from various sources. Equipment Blueprint: Blast Furnace ([garrisonability=269] for [threat=81]), is a quest item. [item=128264] ([garrisonability=275]) and [item=128265] ([garrisonability=305]) are vendor rep items.

The blueprints for [garrisonability=278], [garrisonability=277], [garrisonability=279], [garrisonability=281], & [garrisonability=280] are not obtainable and are no longer required for the achievement.
*Source: Patch 6.2 Hotfixes: July 27 - July 29

However, each of these 5 pieces of equipment has a chance to be provided automatically when upgrading or building new ships.

* Credit to Skeeve2010 for this improved Tomtom code suggestion.

Patch 6.2.2 update:

As of 09/01/2015, Blueprints are now learned account-wide*.

Source: https://twitter.com/WarcraftDevs/status/639942093520027649

* Except for the blueprints that require reputation ([garrisonability=275] & [garrisonability=305]), any of the blueprints that you have learned on your alts will be unlocked at [npc=93812] / [npc=94801] once you have completed A True Naval Commander / A True Naval Commander.

Thank you Blizz!

If you are like me and have lost track of what blueprint you have got for which toon, just run this macro to see what you need to get (original code from Steiner14512):

/run for k, v in pairs({ Belgork = 38932, Felsmith = 39366, Xanzith = 39356, Cindral = 39363, Shark = 39355, Zoug = 39360}) do print(format("%s: %s", k, IsQuestFlaggedCompleted(v) and "\124cff00ff00Yes\124r" or "\124cffff0000No\124r")) end

For those who have Addons like macro Toolkit and can handle >255 characters, here is a more complete and descriptive macro to use. It includes a few extra plans like the Captains Spyglass:

/run for k,v in pairs({SharksMinefield=39355, FelsmithsFelsmokeLaunchers=39366, BelgorksBilgePump=38932, XanzithsHighFoglights=39356, CindralsIceCutter=39363, CaptainsGhostlySpyglass=39365, ZougsTrueIronRudder=39360, HellfireBoss2Gyroscopic=39364, REVEREDHandOfTheProphetSinkable=39358, HONOUREDHandOfTheProphetSinkableFishnet=39359}) do print(format("%s: %s", k, IsQuestFlaggedCompleted(v) and "\124cFFFF0000Done\124r" or "\124cFF00FF00Not Done\124r")) end