[linMcHlp]

2 hours 37 minutes.

My clue:

Chesapeake 1000 at FSK Bridge

[linMcHlp]

Error in the original c'gm, last lines should be:

KMI QKM'A WRKJB WSQSMSABRA QR,

ORPKXAR S KQ SMHTVHRW SM QKMDSMW.

KMW JBRGRETGR MRHRG ARMW JT DMTY ETG YBTQ JBR ORVV JTVVA;

SJ JTVVA ETG JBRR.

Otherwise, thanks for the puzzle.