# data[].attributes.body
We keep track of wind speed and direction, our heading and speed, and the barometric pressure. We try to add an entry each hour, but at least at the beginning of each person’s shift and when things change.

# data[].attributes.body
A logbook (a ship's logs or simply log) is a record of important events in the management, operation, and navigation of a ship. It is essential to traditional navigation, and must be filled in at least daily.

# data[].attributes.body
Most national shipping authorities and admiralties specify that logbooks are kept to provide a record of events, and to help crews navigate should radio, radar or the GPS fail. Examination of the detail in a ship's log is often an important part of the investigative process for official maritime inquiries, in much the same way as a "black box" is used on airplanes.

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# data[].attributes.headline
The term originally referred to a book for recording readings from the chip log that was used to estimate a ship's speed through the water.

# data[].attributes.subject
The term originally referred to a book for recording readings from the chip log that was used to estimate a ship's speed through the water.