The webpage “DTG3 ROV” from Deep Trekker (n.d) introduces its
underwater ROV (Remotely Operated Vehicles) “that observes the depths of large
bodies of water by operators from shore”. According to Deep trekker, the DTG3
ROV is a mini observation-class underwater ROV build to deploy rapidly and
quickly conduct visual inspections in underwater environments. The DT3G is the
most portable ROV which provides an exceptional 4K camera in a durable yet
lightweight vehicle (Deep Trekker, n.d). Deep Trekker states in its webpage
that the DT3G could be a deployed within 30 seconds and has a battery life up
to eight hours. It is also equipped with three thrusters and a patented pitch
system, that allows for flexible operations and descent capabilities (Deep
Trekker, n.d). The webpage also highlights about DTG3’s
270-degree rotating camera that offers a massive range of view for ship
hulls, sea floors, and everything in between, without the need to maneuver the
thrusters. According to Deep trekker, DTG3 ROV has a depth rating of 200m and
comes along with several add-ons such as the grabber, laser scaler, USBL
positioning, thickness gauge, environmental sensors and extended tether. The
Revolution ROV has 6 thrusters and a revolving camera head which allows it to
have better lateral movement and maximum control, along with the ability to
identify targets on seafloor effectively. Thus, making the Revolution ROV the
best ROV in Deep Trekker’s lineup.
The Revolution ROV surpasses the other ROVs due to the power and
design of its 6 thrusters. There are many types of thrusters, such as general,
ducted, channel, water jet, flat, magnetic fluid, and vector thrusters (Zhu, 1992).
The current research of thrust distribution in ROV assumes that
the hydrodynamic performance of the thruster is known, and the flow
field is uniform (Wu, 2017). According to Deep trekker,
The DTG3 uses the 3-thruster design which enables the operator to manipulate
the pitch or yaw for vertical and lateral movements. Unless if a precision
thruster is added to the DTG3, the operator doesn’t need use the pitch function
and can change depths without the need to rotate the ROV, thus making it ideal
for the trickiest of observation and inspection needs (Deep Trekker, n.d). In
comparison to the Revolution ROV’s 6-thruster design that provides unmatched
control in harsh underwater conditions, and when combined with its 305m depth
rating, making it ideal for complex deep ocean missions (Deep Trekker, n.d). Out
of the 6 thrusters in Revolution ROV, two of them are vertically mounted for
precise vertical movements and depth holding and the remaining four are mounted
horizontally and in a vectored configuration to allow for lateral movements. A large bollard pull thrust
is required in an ROV, so the ducted propellers are used in the vector layout
propulsion system for greater thrust (Bin Zhou & Min Zhao, 2020, p.1). This
proves that the vectored configuration of the revolution ROV is more efficient
and provides greater thrust compared to the 4-thruster design of the DTG3 ROV.
The Revolution ROV’s revolving head camera has better features
and functionality compared to its counterparts. The DTG3 ROV has a full HD
internal camera that comes with a zero-latency viewing on its handheld
controller along with a 270-degree rotating field of view. It could switch to photo
mode to snap photos up to 8 megapixels (Deep Trekker, n.d). In comparison to
the Revolution ROV, which consists of 260-degree revolving head camera at the
front of the vehicle (Deep Trekker, n.d). The revolving head camera has
ultra-high-definition which allows you could see the view from its controller
(Deep Trekker, n.d).In addition to this, the revolving head camera comes with
powerful LED lights and laser scaler which helps you identify the hull of a
ship or targets on the seafloor (Deep Trekker, n.d). This brings us to the fact
the revolving camera has higher resolution than HD camera of DTG3 which allows
to view targets on seabed more in depth making it to be more effective than the
HD camera of the DTG3.
The DTG3 is the ultimate ROV in portability and is cost
effective alternative to the Pivot or the Revolution ROV (Deep Trekker, n.d).
The DTG3 ROV also has higher battery life compared to the other ROVs in the
Deep Trekker line up (Deep Trekker, n.d). This highlights that the DTG3 excels
better than the Revolution ROV in certain aspects.
In conclusion, the Revolution ROV is the most stable and
powerful ROV in the Deep Trekker lineup, due it’s to ability to survive harsh
underwater conditions and accomplish complex missions. The Revolution ROV has
features such as its 6 thrusters and revolving camera head that gives it an
edge compared to its other counterparts.
References:
Deep Trekker, D. (n.d.). The complete underwater ROV buyers guide 2022.
Deep Trekker.
Deep Trekker, D. (n.d.). DTG3 package. Deep Trekker. https://www.deeptrekker.com/shop/products/dtg3
Deep Trekker, D. (n.d.). Revolution ROV | Package. Deep
Trekker. https://www.deeptrekker.com/shop/products/revolution-x-rov
Zhou, B., &
Zhao, M. (2020, August 15).https://www.sciencedirect.com/science/article/abs/pii/S00298018203055
