Hi John: Good question since that point is always brought up by Senan. The one word answer is
current.
The Californian was headed to Boston, but not directly. Capt. Lord intended to keep her at 42° 00'N when he turned the corner earlier that morning on account of ice reports he had received. It was at noon that he got her latitude with a sun sight. At noon on 14 Apr her latitude was noted at 42° 05'N. He then had her on course 269° true headed for 42°N 51°W. We know this from Capt. Lord's affidavit 25 June 1959. By 6:30 PM Californian's DR location was at 42° 03'N, 49° 09'W where she passed three large ice bergs which were 5 miles south. We know this from the wireless transmission of record that Cyril Evans sent to the Antillian at 5:35 PM NY time (7:25 PM on Californian).
Master Navigation Message (M.S.G.) from Californian to Antillian (MJL): “To Captain ‘Antillian,’ 6.30 p.m. apparent time, ship; lat. 42º 3’ N., long. 49º 9’ W. Three large bergs five miles to southward of us. Regards. Lord”
Notice that she was already 2 miles south of her noon latitude at 7:25 PM. (Lord would later claim he was at 42° 05'N, the same as their noon latitude.)
At 10:21 PM Californian time, Capt. Lord reversed his engine to bring the Californian to a stop because of an ice field ahead. Officially, he later stated her stopped position at 42° 05'N, 50° 07'W. Notice that he kept her latitude the same as at noon.
Now for some other hard cold facts:
1. The Titanic wreck site is located at 41° 43.5'N, 49° 56.8'W at the center of the boiler field.
2. The bearing to the ship above which rockets were seen from the Californian was SSE magnetic. Both 2/O Stone and 3/O Groves reported this, so we have two officers confirming the same magnetic line of bearing.
3. Capt. Lord gave the compass correction (variation plus deviation) as 22 degrees west. This makes the bearing line to the mystery ship SE true, or 135°.
4. Both the Californian and the Titanic were stopped for the night. The Californian had stopped at 10:21 PM Californian time, and the Titanic was certainly stopped by 12:00 AM Titanic time. In other words the relative positions of these two ships should not change. But the important point is that they both were free to drift with the local current.
5. Since neither the Californian nor the Titanic were moving during those hours except for the local area current, then at the time the Titanic foundered over the position of the wrecksite, the Californian had to be located bearing 315° true from the wrecksite. The Californian could not have been at the stopped position given by Lord at the time the Titanic foundered because that position is way off the line of bearing. No matter how you slice it, the Californian had to drift down to that line of bearing shown on the chart below from wherever she was at 10:21 PM when she stopped for the night. The only question is where on that bearing line do we put her? Once that can be derived, then the distance between the Titanic and the Californian could be determined.
6. From Capt. Lord's 1959 affidavit: “At about 9:10 AM the
Carpathia set course for NY... About 11:20 AM I abandoned the search and proceeded due west (true) through the ice, clearing same about 11:50 AM. The Mount Temple was then in sight a considerable distance to the SW of us heading to the westward. The noon position was 41° 33’N 50° 09’W...From this position I placed the wreckage in position 41° 33’N 50° 01’W...” The latter position also given at the British Inquiry (7039).
What does this all mean? The Titanic foundered in latitude 41° 43.5’N, yet the wreckage was observed in latitude 41° 33’N at 11:20 AM. And the latitude of the wreckage was probably accurate since it was based on a noon observation of the sun taken by all of Californian’s officers. So how did the wreckage get down to 41° 33’N from 41° 43.5'N in about 10 hours? The answer to this question, which of course is the the local current, is also the answer to the question of how did the Californian end up on that line of bearing running directly to the NW (true) from the wrecksite when the Titanic foundered.
But more than that, that current must have been affecting the path of the Californian for several hours before she even stopped. Look at the American Inquiry and the table of air and water temperatures provided by Capt. Lord to Senator Smith. Between 12 noon and 4 PM the water temperature dropped from 56°F to 36°F, and then continued to drop till at midnight it reached 28°F. The Californian had entered a cold, strong, southerly Labrador current, the same current that caused the icebergs and field ice to drift that far south. Despite that Polaris star sight allegedly taken by Chief Officer Stewart at 7:30 PM, the Californian was well below the track that Lord had laid out at noon.
As I said in my paper, the mistake Capt. Lord made was afterward, when he tried to cover up the events of the night. It was thought not to be in their interest to be truthful about their latitude once the story broke that Californian had seen rockets during the middle watch. (He even claimed his position was a state secret when he reached Boston). The story of keeping to her noontime latitude was to add distance between the two ships, a distance of at least 19 miles north of the CQD latitude.