Exercise 7 - Parallel indexing

Exercise 7 - Parallel indexing



Exercise summary

Student to … ‘Execute a passage from the east of ‘Swifta Island’ heading to the NE leaving ‘Synka Island’ to your port. Use parallel index lines to stay a safe distance off the island until you clear ‘Calf of Synka’.


Duration

15 minutes

Previous knowledge, understanding or skills

Has completed Exercise 6 so understands how to use VRMs to assist with navigation and holding a distance off a coast.


Aim

To evolve the understanding of VRMs to apply this knowledge to use Parallel Index lines.


Desired learning outcomes

To ensure student understands how to set-up and use PIs and the benefits of PIs vs VRMs.

 

Student to appreciate that PI lines are not a feature on most radar displays in the small boat sector.


Session running order

Student to set up radar as per previous exercises and then determine a preferred distance to hold off a line drawn between ‘Huckle Head’ and ‘Leslie Head’.

 

Student to set up parallel index line to hold off this line at pre-determined distance.

 

As vessel approaches Leslie Head student to align second PI onto ‘Rods Skerry’ isolated danger to head due north using Rods Skerry as a reference


Stretch options and other comments

None