ZCZC HA30 221200 UTC AUG 26 IRAKLEIO RADIO NAVWARN 993/26 SARONIKOS GULF MEGARA GULF SUBMARINE EXERCISES AREA ‘DIAPORIA’ ON 25 AUG 26 FROM 1300 UTC TO 2230 UTC IN AREA BOUNDED BY: 37-50.00N 023-10.00E37-50.00N 023-22.00E 37-56.50N 023-10.00E 37-56.50N 023-22.00E AVOID CROSSING ABOVE AREA. CANCEL THIS MSG ON 252330 UTC AUG 26