The Vessel terminal entries are entries found on two terminals within The Vessel in the Fallout 4 add-on Far Harbor.
Missile status terminal
USS Democracy Missile System - OS.15.4c
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K97 - 01: <ERROR!> FIRING SYSTEM MALFUNCTION.
CONTACT THECHNICIAN IMMEDIATELY.
K97 - 02: <ERROR!> CONTAINMENT BREACH DETECTED!
EVACUATE TO SAFE DISTANCE!
K97 - 03: MISSILE ACTIVE. LAUNCH KEY INPUT REQUIRED.
k97 - 04: <ERROR!> CONTAINMENT BREACH DETECTED!
EVACUATE TO SAFE DISTANCE!
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Crypt terminal
IN THIS HOLY VESSEL
THINK ON THE SACRIFICES
OF OUR FAMILY
AND RECALL THE SINS
OF WICKED FAR HARBOR