An area bounded by an imaginary line drawn from Garrison Point Navigational Light (position 51 degrees 26.788 minutes North 00 degrees 44.738 minutes East) in a 305 degrees (true) direction for 143 metres, thence in a 045 degrees (true) direction for 273 metres, thence in a 090 degrees (true) direction for 250 metres and thence in a 180 degrees (true) direction for 355 metres to the shore line.