Noon Summary Log
| Day: | 576 |
| Date: | 20th December 1987 |
| Latitude: | 17° 56.5′ S |
| Longitude: | 31° 51.2′ W |
| Water Temperature: | 27.6°C |
| Wind @ Noon: | 14 ENE |
| Max Wind /24 hours: | 18 ENE |
| Min Wind /24 hours: | 12 NE |
| Cloud Cover | 5/8 |
| Cabin Temperature: | 31°C |
| Outside Temperature: | 28.6°C |
| Barometer: | 1012 |
| Ships Seen: | 1 |
Source: CUL00045/16