12.8 Sound Navigation Ranging System

  1. No evidence has been found to date with regard to existing offshore wind farms to suggest that Sound Navigation Ranging (SONAR) systems produce any kind of SONAR interference which is detrimental to the fishing industry, or to military systems. No impact is therefore anticipated in relation to the presence of the Array.

12.9 Noise

  1. No evidence has been found to date with regard to existing offshore wind farms to suggest that prescribed sound signals are in any way impacted by acoustic noise produced by the wind farm, and so no impact is anticipated from the presence of the Array.

12.10 Summary of Potential Effects on Use

  1. Based on the detailed technical assessment of the effects due to the presence of the Array on navigation, communication and position fixing equipment in the previous subsections, Table 12.2 summarises the assessment of frequency and consequence and the resulting risk for each component of this impact.

 

Table 12.2: Summary of Risk to Navigation, Communication and Position Fixing Equipment

Topic

Frequency

Consequence

Significance of Risk

VHF

Negligible

Minor

Broadly Acceptable

VHF direction finding

Extremely Unlikely

Minor

Broadly Acceptable

AIS

Negligible

Minor

Broadly Acceptable

NAVTEX

Negligible

Minor

Broadly Acceptable

GPS

Negligible

Minor

Broadly Acceptable

EMF

Extremely Unlikely

Negligible

Broadly Acceptable

Marine Radar

Remote

Minor

Broadly Acceptable

SONAR

Negligible

Minor

Broadly Acceptable

Noise

Negligible

Minor

Broadly Acceptable

 

  1. On the basis of these findings, associated risks are screened out of the risk assessment undertaken in section 16.