Aluminum Brow Philadelphia Navy Yard
This heavy duty aluminum brow or gangway is used at the Philadelphia Naval Shipyard. It features two rows of security rails as well as a custom aluminum framed security gate fabricated to fit this particular brow.

Ship to ship brows
Another heavy duty aluminum gangway or brow is used to board the ship to the right. From there personnel can cross from ship to ship on smaller standard commercial duty aluminum gangways or brows.

The Philadelphia Naval Shipyard requests security gates on their gangway. The aluminum bare frames are custom built to the specific gangway, when the Navy receives them they add the infill and their locking mechanism.