The Nebuchadnezzar was built in 2069, it is a hovercraft designed for the sewers and tunnels under theground. It can broadcast up to seven people at a time and can upload programs directly to them. It is not an attack ship however, its only defence against the sentinels is its armor and an EMP blast. Unfortunately, this also disables the ship, causing it to fall to the ground, wherever that is. It also would kill anyone still connected to the Matrix. Here are a few pics to show you what it looks like.