Following is the table of special task organization Meaning visual call signs listed in ACP 129. Call sign Meaning (Numeral flag) Ø Commander Task Force No. 1 *Commander Task Group No. 2 *Commander Task Unit No. 3 *Commander Task Element No. 4 Commander Fleet 5 6 Task Force No. 7 *Task Group No. 8 *Task Unit No. 9 *Task Element No. * Within own task organization Examples: 6p4p5 . . . Task Force 45 8p3 . . . . . . Task Unit 3 (within own Task Group) 9p2D . . . . Destroyers of Task Element 2 (within own Task Unit) 3p6. . . . . . Commander Task Element 6 (within own Task Unit) The special task organization call signs in the previous list have been extended to intra-USN messages transmitted by flashing light. Examples: CTF 50. . . . . Zero p5p0 CTG 50.3 . . . . . One p3 COMSIXTHFLT. . . . . Four p6 TF 50. . . . . Six p5p0 TG 50.3.5 . . . . . Seven p5 CONVOY VISUAL CALL SIGNS.—Convoy visual call signs are contained in ATP 2, volume 2, or appropriate national or regional defense organization publications. GOVERNMENT SIGNAL STATIONS.—On shore or on lightships, use the letter G as the visual call sign to call any or all the senior men-of-war. SHORE SIGNAL STATION.—In compliance with international procedure, the letter K (with complement if desired) is used to call or address shore stations. MILITARY SIGNAL STATION.—The following assignments are reserved for the signal station indicated: Call sign HpØ Hp1 Hp2 Hp3 Hp4 Hp5 Hp6 Hp7 Hp8 Hp9 Hp1pØ Hp1p1 Hp1p2 Hp1p3 Hp1p4 Hp1p5 Hp1p6 Hp1p7 Hp1p8 Hp1p9 Hp2pØ Hp2p1 Hp2p2 Hp2p3 Hp2p4 Hp2p5 Hp2p6 Hp2p7 Hp2p8 Hp2p9 Hp3pØ) ) ) ) Hp3p9) Commander in chief Harbor entrance control post/port war signal station (HECP/PWSS) (main signal station) HECP/PWSS (secondary auxiliary signal station) Port director Senior officr present afloat (SOPA) (when ashore) SOPA administrative (when ashore) Flag officer, second in command Commander naval district Commander naval base Commander naval operating b a s e Commander naval shipyard Commander sea frontier Commander air station Commander amphibious base Commander section base Commander submarine base Degaussing station No. 1 Degaussing station No. 2 Degaussing station No. 3 Degaussing station No. 4 Deperming station No. 1 Deperming station No. 2 Reserved for local assignment by competent authority to shore signal stations not covered herein. 3-15