What do these do then?

[WindermereColvic]

Just been reading an old PBO (506) and found this picture of Blizzard. Started me a’wonderin what those spools of green rope either side of the cockpit are for..Any ideas?
Matt

 

[LONG_KEELER]

If it's way down SA, I reckon to tie lines ashore.

 

[fantasia7628]

Might they be for trailing a drogue or sea-anchor?

 

[NorthUp]

Long keeler is right, its been discussed here before- and I've only been on here a dogs watch...