Specifications:
The document describes an automatic retractable swim ladder, known as 'Marea', designed for marine use. The ladder is constructed from stainless steel, available in either a polished or powder-coated finish. The steps are also made of powder-coated stainless steel and include anti-slip inserts for safety.

Features:
- The ladder includes a sensor that alerts when the ladder is extended into the water, providing a safety feature for users.
- It is housed in an aluminum box, which is not watertight, indicating that it should be used in environments where water exposure is controlled.
- The ladder is operated via a dedicated electro-hydraulic control unit, ensuring smooth and automatic retraction and extension.

Dimensions and Weight:
The ladder is available in two configurations, with either 4 or 5 steps:
- 4 Steps: A = 790 mm, B = 335 mm, F = 305 mm, H = 105 mm, L = 1050 mm, N = 780 mm, W = 430 mm, Weight = 39 kg
- 5 Steps: A = 1050 mm, B = 335 mm, F = 305 mm, H = 105 mm, L = 1350 mm, N = 1000 mm, W = 430 mm, Weight = 45 kg

Recommendations:
It is recommended to ensure the ladder is installed in a controlled environment due to the non-watertight nature of the housing box. Regular maintenance and checks of the sensor and hydraulic system are advised to ensure optimal performance and safety.