boof (OP) replied with this 1 year ago, 1 day later, 1 day after the original post[^][v]#1,331,722
SINGLE LETTER SIGNALS BETWEEN ICEBREAKER AND ASSISTED VESSELS
Icebreaker: Be ready to take (or cast off) the towline.
Icebreaker/Assisted Vessel(s): I am ready to take (or cast off) the towline.
boof (OP) double-posted this 1 year ago, 1 day later, 3 days after the original post[^][v]#1,331,968
The declassified NATO information for flag Yankee:
indication: ACKNOWLEDGE
normally displayed: At yardarm. REPEATED BY ADDRESSEES
___ (signal) TACK Y: meaning: A separate acknowledgment required.
Y TACK ___ (signal): meaning: Signal following is acknowledged.
note TACK means tackline, a short piece of line used to separate flags in a signal hoist
boof (OP) replied with this 1 year ago, 1 day later, 6 days after the original post[^][v]#1,333,003
Many flags I've seen on Wikipedia have red and yellow stripes, but rarely are they oriented at a slant as the Yankee flag. One example is the flag for Vojkovice in the Brno-Country District of the Czech Republic.