After serving honorably in the US Navy for more than 30 years, I decided that it was time to retire. A new type of adventure awaited me. Looking back on my life I can say that It had been one adventure after another. I had been lucky enough to serve with some great people, onboard some of the greatest ships in the world. I had visited far off ports and survived many a battle. My life's story can be found somewhere within the tales listed below. Can you piece these tidbits together and sign my final log?
This cache can only be found after solving some of the other Sailor Jerry's Logbook caches and recording their final coordinates. How many, or which ones, will depend on how lucky you are. 
The real Peach 107 and the real Sailor Jerry
Use the last number of either the North (N) or West (W) “FINAL” coordinates only, as stated. Such as if the final coordinates for 'Sailor Jerry's Logbook: Seasick' were N32 35.673 W112 29.045 and the puzzle states “Q = Sailor Jerry: Seasick (N) + Sailor Jerry: Seasick (W), Q would be 3 + 5 = 8.
Solve for N34 3A.BCD W112 3W.XYZ
A = Sailor Jerry's Logbook:Coming About (N) - Sailor Jerry's Logbook: Brown Water Navy (N)
B = Sailor Jerry's Logbook: First Entry (N) - Sailor Jerry's Logbook: Open Water (W)
C = Sailor Jerry's Logbook: Brown Water Navy (W) + Sailor Jerry's Logbook: Pearl Harbor (W)
D = Sailor Jerry's Logbook: Battle of the Java Sea (N) - Sailor Jerry's Logbook: First Entry (N)
W = Sailor Jerry's Logbook: The Gray Lady List (W) - Sailor Jerry's Logbook: Battle of the Java Sea (W)
X = Sailor Jerry's Logbook: The Gray Lady List (N) - Sailor Jerry's Logbook: Open Water (N)
Y = Sailor Jerry's Logbook: Coming About (W) - Sailor Jerry's Logbook: The Gray Lady (N)
Z = Sailor Jerry's Logbook: Pearl Harbor (N) + Sailor Jerry's Logbook: First Entry (W)
I hope you enjoyed this puzzle cache.