What is INTERCO or International Code of Signals and its contents in details ?

1. All Stations To Which Signals Are Addressed Or Which Are Indicated In Signals Are To Hoist The Answering Pendant At The Dip As Soon As They See Each Hoist.
2. Close Up The Hoist After They Understand It.

To Complete A Signal:

1. The Transmitting Station Is To Hoist The Answering Pendant Singly After The Last Hoist Of The Signal To Indicate That The Signal Is Completed.
2. The Receiving Station Is To Answer This In A Similar Manner To All Other Hoists.

To Act When Signals Are Not Understood:

1. If It Can Distinguish The Signal But Cannot Understand The Purpose Of It, The Foll. Signals May Be Hoisted:
2. If The Receiving Station Cannot Clearly Distinguish The Signal Made To It, It Is To Keep The Answering Pendant At The Dip.
3. ‘Zq’ =  “Your Signal Appears Incorrectly Coded. You Should Check And Repeat The Whole”.
4. ‘Zl’ =  “Your Signal Has Been Received But Not Understood”.

Use Of Substitutes;