Page 671 - The ROV Manual - A User Guide for Remotely Operated Vehicles 2nd edition
P. 671
Multi-beam sonar, 401402 Multipath signals, 433434, 433f Multiplexing, 359361 Multiservice vessel (MSV), 660 Murder victim search, 582
N
Narrow area search, 584 Navigation accessories, 592595 Navigational sensors, 453
accelerometers, 463465, 464f
altimeters, 471
bathymetric sensors, 468
combined instruments, 474475
conductivity, temperature, depth sensors, 468470 Doppler velocity logs, 471472
gyroscope, 456463
inclinometers, 472
inertial navigation systems (INS), 465467
long baseline (LBL) arrays, 472473
payload sensors versus vehicle sensors, 453455 ultrashort baseline (USBL) arrays, 473474
Near neutrally buoyant cable, 204, 206f Nereus vehicle, 647
Night operations, 605606
Nitrate, 43
Noise, 433
Noise level (NL), 396
Nondestructive testing (NDT), 477481
alternating current field measurement, 479480 magnetic particle inspection, 478479 ultrasonic flaw detection, 480481
O
Observation class ROVs (OCROVs), 58, 508 Obstacle avoidance sonar, 288
Ocean environment. See also Chemical oceanography
circulation, 4551
effects of wave pattern upon ROV operation, 5152 ocean dynamics, 4552
physical oceanography, 2224
Offshore operation, 599
O&G drill support, ROVs in, 1819
Ohm sift, 215
Oil pressure, 289
Oil spills, 623
Oil temperature, 289
Open face cutting tool, 539, 542f
Open ocean, operations in, 445
Open Systems Interconnection (OSI) networking model,
332334, 333f
Open-End Spelter socket, 209f Open-loop control system, 66 Operations, 604606, 629633
with divers, 604605
extreme temperature, 606
night, 605606
precautions and limitations, 605 on and around vessels, 604 from vessel of opportunity, 604
Operational deployment of ROVs, 609613 general considerations, 609
operational examples, 611613 performance considerations, 609610
Opticacoustic seabed classification, 3435 Optical and radiation, 323
Optical communication, 63
Optical data transmission, 189
Optical fiber, 344355
Optical time-domain reflectometer (OTDR), 354355, 358f Optical transmitter, 350
Optically Pumped Alkali Vapor Magnetometer (OPM), 493 Orbital wave, 4849
Ordered delivery, 364
O-rings
cleaning, 194
inspection, 194
lubrication and installation, 194
Over-molding, 177
Overturning process, 28
Oxidation reduction potential (ORP), 40
P
PAP Mark 5, 563f
Parallel data transmission, 335, 335f Paramagnetism, 478
Passive inductance, 483486
Passive sonar, 390
Payload sensors versus vehicle sensors, 453455 “Peers” 333
Pendulum accelerometers, 464465
Penetrators, 171, 185
Permanent magnet DC motors, 128
pH and alkalinity, 3839
Physical oceanography
coastal zone classifications and bottom types, 2224
distribution of water on earth, 22 Physics simulation, 103105
Pier inspections, 614619 Pier/mooring/anchor searches, 596 Piezoelectric accelerometer, 314 Piezoelectric sensor, 315
Pipeline survey skid with boom-mounted cameras, 551f
Index 673
