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- Q2069293 subject Q8696914.
- Q2069293 subject Q8697139.
- Q2069293 abstract "A dolphin striker (an older term for a martingale boom or simply a martingale; sometimes called a striker) is a small vertical or near vertical ancillary spar spanning between the bowsprit and martingale thereby redirecting the tension in the forward end of the martingale slightly more vertically. This vertical component is necessary to more effectively oppose the forestays' mostly upward tension on the forward end of the bowsprit than would be the case in the absence of the dolphin striker.Around 1813 some large sailing vessels experimented with double strikers: these had two downward-pointing spars forming an inverted V in the middle of the bowsprit. However, the practice was short-lived as it did not seem to provide any additional benefit. The dolphin striker's length was typically half the length of the spritsail yard or, when spreaders were used, the same length as one spreader.On a catamaran such as the Tornado and the Cobra where the mast is stepped on a beam between the hulls the dolphin striker provides support for the beam in order to support the mast load.".
- Q2069293 thumbnail Martingale_dolphinStiker_bobstay.png?width=300.
- Q2069293 wikiPageExternalLink navalencyclopedia00hamerich_djvu.txt.
- Q2069293 wikiPageExternalLink v=onepage&q&f=false.
- Q2069293 wikiPageExternalLink www.seatalk.info.
- Q2069293 wikiPageWikiLink Q1282208.
- Q2069293 wikiPageWikiLink Q1330194.
- Q2069293 wikiPageWikiLink Q20642239.
- Q2069293 wikiPageWikiLink Q461.
- Q2069293 wikiPageWikiLink Q523831.
- Q2069293 wikiPageWikiLink Q5429522.
- Q2069293 wikiPageWikiLink Q8696914.
- Q2069293 wikiPageWikiLink Q8697139.
- Q2069293 comment "A dolphin striker (an older term for a martingale boom or simply a martingale; sometimes called a striker) is a small vertical or near vertical ancillary spar spanning between the bowsprit and martingale thereby redirecting the tension in the forward end of the martingale slightly more vertically.".
- Q2069293 label "Dolphin striker".
- Q2069293 depiction Martingale_dolphinStiker_bobstay.png.