Most of the Magnum 6K line of Ethernet switches, which have always enjoyed a reputation for toughness and reliability in harsh environments, have been tested and are now DNV certified.
Aboard ships, networking products such as Ethernet switches face many of the harshest and most extreme environmental conditions. These conditions include extreme temperatures, humidity, vibration, and electro-magnetic interference (EMI). Det Norske Veritas (DNV) provides the industry certification for products aboard ships, high speed & light craft and Det Norske Veritas' Offshore Standards. Networking products are tested for temperature, humidity, vibration, EMC and enclosure.
The challenges of marine network applications include coping with harsh environmental conditions. These conditions include extreme operating temperatures, heavy moisture, erosion, extensive shock and vibration. Also, extensive EMI can prevent some equipment used in the ship, especially compass and navigation systems, from operating properly.
The following GarrettCom Ethernet switches are DNV Certified--Certificate No. A-11533:
Magnum 6KQ, Magnum 6KQE, Magnum 6K32T, Magnum 6K32TR, Magnum 6K32TRC, Magnum 6K25e, Magnum 6k25Re, Magnum 6K32F, Magnum 6K32FR and Magnum 6K32FRC Ethernet switches.
the Magnum 6K line of Ethernet switches are available from Dewar Electronics .