At about 08 : 45 on 19 February , Alcantara was steaming north - north - east up its patrol line , lookouts spotted smoke off the port beam .
Wardle manoeuvred closer to identify the source of the smoke .
At about 08 : 45 on 19 February , Alcantara was steaming north - north - east up its patrol line , lookouts spotted smoke off the port beam and Wardle manoeuvred closer to identify the source of the smoke .