Partial answer
There are 5 messages encoded in the image, respectively in:
International Maritime Signal Flags, Braille, Pigpen cipher, Semaphore, and Morse code.
However:
Each message has several mistakes within it...
Message 1:
Several of the flags (marked below in brackets) have red sections instead of yellow; others have black sections which should be white. If we fix these, then we produce the message:
(D)(E)BUSSYS {C}UAIRE (D)(E) (B){L}ANK
Round brackets indicate red for yellow, curly brackets indicate black for white in addition.
This message itself contains a further mistake - the second 'U' should be an 'L' to spell out "DEBUSSY'S CLAIRE DE BLANK", the answer to which is LUNE.
Message 2:
Two Braille letters here are corrupted, but the overall message appears that it should spell out "ELEMENT (N)INETY (T)WO", the answer to which is URANIUM (symbol 'U').
Message 3:
This Pigpen cipher contains several completely superflous letters:
F(M)RENC(D)H W(V)OR(B)D F(M)O(P)R K(H)ING(U)S
This appears to give us the message "FRENCH WORD FOR KINGS", the answer to which is ROIS.
Message 4:
The semaphore message also contains several mistakes, coming out as:
N{NN}MBER AF(B)TER T{QY}REE
Here it appears we should substitute a 'U' for the first NN, remove the B, and sub in an H for the QY to read the message "NUMBER AFTER THREE", the answer to which is FOUR or 4 if dealing with integers.
Message 5:
The Morse code translates to: PROTEI(A) HAVIN(W) (N) FAMOUSL(Q) LON(W) NAME, which appears like it should read (with substitutions) as "PROTEIN HAVING A FAMOUSLY LONG NAME", the answer to which is TITIN (see this link, for example).
Altogether then we appear to have:
LUNE U(RANIUM) ROIS FOUR TITIN
But I cannot yet see what we are expected to achieve with this, or how the title relates to the puzzle itself... Further thought required...