2022 Ronstan Marine Catalogue - VIEW CATALOGUE

Custom Products

PHOTO CREDIT:© Najad Yachts of Sweden

B100-0556 Series 100 triple block with guides

Product Type:


Part Number:



1300 kg (2866 lb)


2500 kg (5511 lb)


0.949 kg (2.09 lb)

Yacht Model:

Match race one design

Name: DS 37

Danish Match design team


11.25m (36.9 ft)


3900 kg (8598 lb)

Product Features:

This block was designed specifially for the Danish Match racing circuit.It is used on the 37 foot one design racing yacht DS 37. This yacht does not use a mainsheet traveller system simply a 6:1 purchase block system attached to the center line of the cockpit.Therefore a very powerful/efficient triple 100mm diameter block is required. With the severe changes of course experienced during match racing guides on the sides of the block are required to help prevent the sheets from being tangled during such manoeuvres. This block is attached to the boom end and is used with bottom deck block B100-0577