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Mast Facts Sheet
The following information is required by Selden for the 
accurate calculation of mast and boom section 
for each individual case.
In order that we can help, simply print out this form
 complete and return to us. 
This form will then be forwarded and discussed with
Selden.
..
A.
Yacht

 Owner

Address

Telephone

Fax

Email

Masthead rig
Fractional rig
Tapered mast
Furlin' mast
Conventional mast
Deckstepped mast
Keelstepped mast
Set of spreaders 1,2,3
Furlex jib furling system
 
Forestay height FH 
Cutter stay height CSH 
Main sail luff length P 
Boom height (top of Boom) BH
Bury Q 
Main sail foot length E 
Main sheet distance from aft face of mast S 
Spinnaker pole length SPL 
Deck/ rooftop height above chainplates DH 
Deck/ rooftop height above waterline WLH 
C. Righting moment
Alt. 1 Righting moment acc. to IMS 1 degree, 
20 degrees,  40degrees (IOR 1 degree) 
Alt. 2 Righting moment at 30 degrees
.
Alt 3 For quotation the righting moment can be approximately 
estimated if the following information is given:
.
Yacht empty Yacht equipped
.
Length Overall 
Displacement 
Max beam 
Ballast 
Draft  ....
Bulb/ Wing keel
Centreboard draft board up/ down 
Ballast board/ other 
.
Date 
Signature 
. Confirmed to customer
Date 
Att 
Please check and sign this form and return it to Northern Spars and Rigging Services Ltd (Selden Regional Centre North East)