CS Pacific was a cable ship registered in Copenhagen, Denmark, owned by the Great Northern Telegraph Company.

The steel vessel was built in 1903 in the shipyards of Burmeister & Wain and delivered that year for the purpose of laying and repairing submarine cable in the Far East networks.

[2] In the 1910s the CS Pacific underwent a major refit in the Shanghai Old Dock in order to get a long awning over the main deck and new rigging to support the wireless antennas.

The decks and upper bridge were regularly covered by large canvas to mitigate the effects of the hot temperatures and heavy rains of the humid subtropical climate.

A junior engineer would check the percentage of cable slack using different graphs, calculator boards and the taut-wire gear.

Amongst the celebrations, the Great Northern Telegraph organised a ball and a dinner in the French Club to which the staff and the crew were invited.

In wartime the submarine cables and wireless stations suffered attacks in order to cut enemy's communications.

William Elmgreen, fourth engineer of the Pacific, captured this time in his personal diary in the following terms: "On 9th April 1940, Denmark was invaded by Hitler's army.

Our neutrality markings were covered with war paint and we left immediately for a repair job on the high seas.

On our main mast was a sealed document with this inscription: 'Thirty days from this date, the C/S-Pacific will be a Prize of War, belonging to his Majesty King George VI.'

"[11]The relationship between the Great Northern Telegraph Company and Cable and Wireless has been properly researched by Prof. K Jacobsen in a collective volume.