Maritime tutorials

[rgov]

Additional review for the maritime tutorials published here.

Order of tutorials:

• Buoyancy: Describe the theory of operation of the buoyancy plugin.
• Hydrodynamics: Describe the theory of operation of the hydrodynamics plugin.
• Create a maritime vehicle: How to design a maritime model.
• Adding visuals: How to import 3D meshes into Gazebo to increase the visual fidelity of your model.
• Frame of reference: Decide the frame of reference for your model.
• Adding system plugins: How to add plugins to your model to provide extra capabilities to it.
• Create a lander vehicle: How to create a lander robot.
• Create an underwater vehicle: How to create an underwater robot.
• Create a surface vehicle: How to create a maritime surface robot.