City Sailing · vídeo

Qué cubre este vídeo

Paul from City Sailing demonstrates ARPA (Automatic Radar Plotting Aid) in real traffic at Dover Harbour, using a live radar display cross-referenced with Actis to track multiple moving targets simultaneously.Watch The radar is tuned at 12 miles, then stepped down to 1.5 miles on short pulse for better close-in definition, with the display set to North-up and stabilized.0:02 ARPA vector time is set to six minutes, then adjusted to two minutes and one minute to show where each target will be at those intervals.3:22 CPA and TCPA limits are zeroed for the demonstration to suppress alarms; Paul explains they should be set higher offshore.1:31 He distinguishes true vectors (red, showing absolute movement) from relative vectors (white/green, showing movement relative to own vessel) and stresses that relative mode is correct for collision avoidance under Rule 19.4:04 Targets include the USS Eagle, two cross-Channel ferries, a hovercraft, a square rigger, and inbound cargo ships doing 17–19 knots, with one showing CPA zero and TCPA 4.3 minutes.9:00 Paul recommends practicing ARPA first in good visibility so targets can be visually confirmed, then repeating the exercise at night and in fog.11:15

Más de City Sailing

Teamwork on the Water: Isle of Dogs at the Sea Cadet National Championships 26sept 2026RS Tera Eastern Championships: What Went Wrong at the Start?sept 2026Isle of Dogs Sea Cadets return to city race training Sept 26sept 2026Epic Urban Sailing with the Isle of Dogs Sea Cadetssept 2026

De City Sailing — mira el barco del canal, la tripulación y cada vídeo analizado.

The Sailing Directory Newsletter

Un correo electrónico con los mejores hallazgos de la flota: los momentos, barcos e historias que merecen tu tiempo de visionado. Introduce tu dirección para recibir tu propia copia.