How how were the first underwater cables for telegraph transmission constructed across oceans?

by A_Lamp_With_No_Feet

In the late 1800s and early 1900s?

What were the conditions like aboard the ship(s)?

How did they do it and what technology of the time was employed?

Really how they did the whole thing!

Searocksandtrees

Hi, not discouraging further contributions here, but to get you started, you may be interested in this old thread