|Oyster Lightwave 395's Main Features|
|Model||Oyster Lightwave 395|
|Type of hull||Monohull|
|Construction||GRP (glass reinforced polyester)|
|First built hull||1988|
|Last built hull||1990|
|Number of hulls built||31|
Fin without bulb
|Rudder||1 spade rudder|
|Cockpit||Closed aft cockpit|
|Standard public price ex. VAT (indicative only)||N/A|
|Oyster Lightwave 395's Main dimensions|
|Hull length||39’ 6”|
|Waterline length||33’ 10”|
|Beam (width)||11’ 10”|
|Light displacement||11001 lbs|
|Oyster Lightwave 395's Rig and sails|
|Upwind sail area||732 sq.ft|
|Rigging type||Sloop Marconi masthead|
|Spars||Mast and boom in Aluminum|
|Standing rigging||1x19 strand wire|
|Number of levels of spreaders||2|
|Spreaders angle||0 °|
|IiFore triangle height (from mast foot to fore stay attachment)||52’ 2”|
|JiFore triangle base (from mast foot to bottom of forestay)||15’ 4”|
|PiMainsail hoist measurement (from tack to head)||45’ 4”|
|EiMainsail foot measurement (from tack to clew)||14’ 10”|
|Oyster Lightwave 395's Performances|
|Upwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
|Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
|Hull speediAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
|Oyster Lightwave 395's Auxiliary engine|
|Engine type||Inboard engine|