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Autonomous Undersea Gliders (AUG). sonar and depth sensors are used with AUV.
ROV transmits video via its tether (cable)
6. Level of AUG’s autonomy is usually to control room on ship. On the other hand,
less than of an AUV. Purpose of AUG is to AUV stores all data, including images and
operate long duration deployments and cover other sensor data until it can be retrieved
large distances using power minimizing at the end of a dive. The size of AUV can
propulsion methods, likes bouncy engines. vary from only a few hundred pounds up to
They traverse entire oceans while cutting a several thousand pounds.
saw-tooth pattern (like a zig zag) through
the water column, resurfacing periodically 10. Most of the AUVs are torpedo
to communicate with satellites and transmit shaped, but few are of complex shape
data back to shore and given significant allowing them to move slowly. AUV follows
amount of time spent on deployment. These preprogrammed course and navigate
vehicles are engineered to use little energy using acoustic beacon of the sea floor. This
as possible. can maintain a direct trajectory through
water and well suited to seabed mapping
ROV (Remotely Operated Vehicle). and sub bottom profiling. Speed, mobility
and spatial range of a ROV is limited
7. It is a vehicle that has a direct link to compared with an AUV. Present day AUV
their controller via a tether. Navigation and can operate up to 6000m depending on the
control of the vehicle is handled in real-time pressure resistance. Generally AUV uses
by a human operator that allows for précising specialized batteries and some use fuel
manipulation of the vehicles appendages cells or rechargeable solar power. The most
(if equipped) to grab objects or thrusters to important factors to be considered during
squeeze into tight areas. Since these vehicles design phase of UUV can be listed as below.
are connected to the surface with a tether,
power and communications are rarely an a. Pressure Hull.
issue. b. Hydrodynamic Hull.
c. Ballast Systems.
Extra Large UUV (XLUUV). d. Power and Energy Systems.
e. Power Distribution.
8. XLUUV is a term that gained traction f. Propulsion System.
in the defence world with the introduction g. Navigation and Positioning.
of about fifty feet long and pretty much an h. Obstacle-Avoidance Systems.
unmanned submarine. These vehicles have j. Maneuvering System.
powerful propulsion and significant range. k. Communications Systems.
Also comprising the control system with fully m. Sensors.
autonomy. It is capable of overcoming many n. Energy and Propulsion.
difficulties that classic AUV encounter during
an operation. Applications and Missions.

The Design Concept. 11. UUV concept is used in many areas,
especially in preparation of battle space in
9. AUV works without physical area denial threats that may create undue
connection to an operator. These are risks to manned systems.
programmed or controlled by operators from
a vessel or shore, who commands the AUV
where, when, and what should be sampled. A
wide variety of equipment such as cameras,
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