The offshore work environment is, many times, aggressive and with extreme conditions, mainly taking into account the submerged work, which is done by professional divers who, in addition to performing high risk services, are subjected to low temperature conditions, high pressure, low lighting, low oxygenation and difficult to access and rescue in case of an accident or medical emergency. In addition, this work has few vital support resources, making the development of a monitoring system with risk classification and vital alert is essential to avoid accidents, especially in submerged work. This happens because conditions of stress and anxiety change the physiological behavior of workers and, added to the adverse environment, can lead to changes in the limits and patterns of normality of the organism. The present work aims to create a database and a health profile of offshore divers, in order to develop a system of vital alerts for the suggestion of interruption of a certain task, avoiding a possible accident that can lead to death.

Monitoring technology is becoming more compact every day. This contributes to the increased use of wearable technologies in various sectors, both aimed at healthcare and performance rating. As it takes place in an aggressive and difficult to access environment, especially when an accident occurs, offshore work increasingly requires the use of these types of devices to assist in the diagnosis and prevention of accidents. The present work aimed to develop, test and validate a wearable equipment for monitoring bio-signals in submerged offshore work activities. This study used the equipment developed to monitor different biological signals from divers in order to avoid possible accidents at work. The various test steps were detailed until the final version of the prototype was drawn up, as well as the ergonomic adaptation of the device to the divers' working clothes. In addition, the entire work methodology performed will be described.