On the morning of 5 November, HX 84 had been passed by the
cargo liner , which was also bound for
Liverpool, enroute from
Port Antonio, during which an offer had been made to
Mopans
Master,
Captain Sapsworth, for
Mopan to join HX 84. However, the offer had been declined and
Mopan continued eastbound alone.
Mopan Having been thwarted from using its
Arado Ar 196 seaplane the previous day, on 5 November the weather was suitable for to utilise its air reconnaissance. A seaplane was launched at 09:40hrs having been ordered to make a sweep wide and deep. When the seaplane returned at 12:05 the observer reported having sighted a convoy steaming eastbound at position . This meant that the intervening distance between
Admiral Scheer and the convoy was approximately . No escort had been observed. This confirmed the earlier
B-Dienst radio intercept by
Admiral Scheer which had identified the convoy as being HX 84. Onboard
Admiral Scheer a dilemma was presented to
Kapitän zur See Theodor Krancke regarding whether he should attack the convoy before nightfall, or wait and make his attack at dawn the following day.
Kapitän Krancke made the decision to attack, with
Admiral Scheer altering course onto 150 degrees and increasing speed to allowing Krancke to intercept at approximately 15:30. At 14:27, an hour before
Admiral Scheer was scheduled to intercept the convoy, a single smoke column was observed. Once visual acquisition had been made a flag could be observed flying from the vessel's masthead, however the purpose of this could not be established. Unsure as to the identity of the vessel Krancke decided to maintain his course, as to turn away to the east would significantly reduce his ability to intercept HX 84 before darkness fell. The vessel was
Mopan, by this time approximately three hours ahead of HX 84. On the bridge of
Admiral Scheer, as the range decreased, it was decided that the vessel was an armed
merchantman, acting as a screen, and stationed ahead or on the flank of the convoy. Krancke trained all his armament on to
Mopan with
Admiral Scheer firing warning shots from her secondary armament of 15 cm SK C/28| SK C/28 guns, which exploded close to the freighter's
bow. At 15:08, by use of a
signal lamp, the
Admiral Scheer ordered
Mopan to
heave to.
Admiral Scheer then proceeded to hoist a
flag signal stating
"Take to your boats and bring your papers across." Krancke kept his guns trained on
Mopans
wireless transmission aerials on her masthead and accompanied this with an order that the ship's wireless was not to be used. This caused some rancour onboard
Mopan with her
wireless officer, James Macintosh, on more than one occasion pleading with Captain Sapsworth to ignore the request from
Admiral Scheer and transmit the internationally recognised signal: R-R-R "(I Am Being Attacked By A Raider)," thereby affording Convoy HX 84 the ability to take some form of evasive action. However, with the guns of
Admiral Scheer trained on the
Mopan and unwilling to sacrifice himself to give the convoy a chance, Sapsworth refused Macintosh's pleas and instead ordered his
ship's company to abandon ship, upon when they would transfer to
Admiral Scheer in order to be taken
prisoner. The order was carried out in a measured and organised manner, something that was not lost on Krancke. Following the evacuation of
Mopan, Admiral Scheer proceeded to sink the vessel. However, this proved to be a more difficult task than was initially envisaged. If he was to make a successful interception of HX 84 before nightfall, Krancke knew that time was beginning to run short. No
prize crew was sent to
Mopan, instead
Admiral Scheer opened fire on the
merchantman from a distance of approximately using a combination of her secondary armament of 15 cm guns and her main armament of 28 cm SK C/28 naval gun| SK C/28 guns. Vexed by the continued stubbornness of
Mopan, Krancke ordered an increase in the rate of fire from the
Admiral Scheers gunners in addition to which he requested the presence of Captain Sapsworth, who cautioned against the targeting of the
aft end of his ship as it was where the ammunition for
Mopans gun was stored.
Mopan finally sank at 16:05. ==Interception==