PORP study guide
PORP · Work through your exam, one topic at a time.
The PORTS Operations and Maintenance Professional Certification (often shortened to PORP) is an independent credential for people who keep Physical Oceanographic Real-Time System installations running and whose data stays trustworthy. It suits field technicians, electronics and telemetry specialists, data-quality analysts, and coastal engineers moving into operational oceanography. The PORP study guide has 9 sections and about 2,416 words.
01PORTS Program Overview, Governance, and Stakeholder Roles
PORTS (Physical Oceanographic Real-Time System) is NOAA CO-OPS' partnership-based program that delivers real-time and predicted water levels, currents, waves, meteorology, and related observations to mariners and port decision-makers. The exam tests program structure, who does what, and how local needs become funded, operated systems.
304 words, about 2 min02Oceanographic and Meteorological Sensor Systems
This domain tests whether you can select, site, and interpret the sensors that produce PORTS observations: water level, currents, waves, meteorology, and water quality. Water level: acoustic (stilling well or bubbler), pressure (needs barometric compensation), radar/non-contact, shaftless float, and GNSS water-level systems.
298 words, about 1 min03Data Acquisition, Telemetry, and Communications
This domain covers how sensor signals become time-stamped, transmitted records: sampling, logging, telemetry, power, and data-path reliability. Sampling and averaging are separate: a 1 Hz sample can be averaged to a 6-minute observation; record the averaging method.
268 words, about 1 min04Real-Time Data Quality Control, QA/QC, and Flagging
Real-time QC protects users from bad observations while preserving the record. The exam tests automated checks, manual QA/QC, flag semantics, and provisional-versus-verified status.
258 words, about 1 min05Tidal and Water Level Datums, Reduction, and Predictions
This domain tests tidal datums, water-level reduction, and predictions-the difference between a sensor reading and a charted or predicted height. Station datum is the local reference for observations; tidal datums (MLLW, MHW, MSL) are computed from a 19-year National Tidal Datum Epoch (NTDE).
267 words, about 1 min06Currents, Waves, and Other Physical Measurements
This domain covers currents, waves, and other physical measurements: instrument principles, coordinate systems, and derived parameters. ADCPs measure velocity profiles using Doppler shifts from scatterers.
254 words, about 1 min07System Operations, Maintenance, and Troubleshooting
This domain tests keeping a PORTS station running: preventive maintenance, troubleshooting, documentation, and service restoration. Preventive maintenance follows a schedule: inspect mounts and cables, clean and antifoul sensors, check desiccant and seals, verify battery and solar charging, download logs, and calibrate or replace sensors.
256 words, about 1 min08Data Dissemination, Products, and User Applications
This domain covers how PORTS data reach users and how products differ: raw observations, predictions, displays, APIs, and decision support. PORTS products include real-time water level, currents, waves, meteorology, predictions, and station metadata; access is through web displays, machine-readable APIs, and sometimes phone, voice, or text services.
261 words, about 1 min09Safety, Environmental Compliance, and Field Operations
This domain tests safe and compliant field work: vessel and site safety, environmental permits, and operational risk control. A field visit starts with a risk assessment and float plan: weather, sea state, vessel capacity, crew, communications, and check-in times.
250 words, about 1 min