NMCruzzin Posted December 3, 2008 #1626 Share Posted December 3, 2008 A loose propeller. Slightly confused auto pilot. LOL!! Hubby & I came up with a LOT of these kinds of reasons while standing there at the back of the ship! They just seem to fit! :D:p:D But I'm sure there is a real reason. Maybe I should have posted this on the 'funny picture' thread! HA!:p Link to comment Share on other sites More sharing options...
Britter16 Posted December 4, 2008 #1627 Share Posted December 4, 2008 I thought they were trying to conserve fuel and slow down arriving at the next port. We also noticed a list when one engine was shut off - no big deal just watch the horizon on your photos. Link to comment Share on other sites More sharing options...
cruiserbryce Posted December 4, 2008 #1628 Share Posted December 4, 2008 if they just use one engine and rotate it back and forth it saves fuel:rolleyes: Link to comment Share on other sites More sharing options...
hogwildcruzers Posted December 4, 2008 #1629 Share Posted December 4, 2008 Promenade deck of the Sapphire Princess on a dark night. Link to comment Share on other sites More sharing options...
diverearl Posted December 6, 2008 #1630 Share Posted December 6, 2008 These shots were taken from the Lido deck at the end of the Full Throttle (20+ knot) U-turn on the Grand Princess 2/4/06. Link to comment Share on other sites More sharing options...
websailor Posted December 6, 2008 #1631 Share Posted December 6, 2008 These shots were taken from the Lido deck at the end of the Full Throttle (20+ knot) U-turn on the Grand Princess 2/4/06. Wow, that seems unusual - is there a story behind the 20+ knot U-turn? I looked at the Grand Princess 2/4/06 thread but didn't see anything about it. Link to comment Share on other sites More sharing options...
Cuizer2 Posted December 6, 2008 #1632 Share Posted December 6, 2008 Wow, that seems unusual - is there a story behind the 20+ knot U-turn? There was when it started. But by the time the turn was finished the story was now in front. :D Link to comment Share on other sites More sharing options...
Genghis Khan Posted December 6, 2008 #1633 Share Posted December 6, 2008 Slightly confused auto pilot. I recall that recent field experiments have shown that inside the Kelvin wake of a moving ship there can be two soliton-like envelopes, which extend to a long distance behind the ship. The source mechanism of these solitons has so far been attributed to the steady advance of a ship. In this note we suggest that ship oscillations, induced by ambient sea waves, provide a more plausible explanation for the initiation. Reducing the two-dimensional nonlinear Schrodinger equation to a simple form, we use existing theories to predict the wave envelopes in the far wake of a travelling ship in heave or pitch oscillations. While available data are insufficient to give a conclusive check of the theory, qualitative relevance can not be discounted. Link to comment Share on other sites More sharing options...
Multi-Cruiser Posted December 6, 2008 #1634 Share Posted December 6, 2008 I recall that recent field experiments have shown that inside the Kelvin wake of a moving ship there can be two soliton-like envelopes, which extend to a long distance behind the ship. The source mechanism of these solitons has so far been attributed to the steady advance of a ship. In this note we suggest that ship oscillations, induced by ambient sea waves, provide a more plausible explanation for the initiation. Reducing the two-dimensional nonlinear Schrodinger equation to a simple form, we use existing theories to predict the wave envelopes in the far wake of a travelling ship in heave or pitch oscillations. While available data are insufficient to give a conclusive check of the theory, qualitative relevance can not be discounted. Is Professor Irwin Corey on this board? Link to comment Share on other sites More sharing options...
Marguerite-a-Ville Posted December 6, 2008 #1635 Share Posted December 6, 2008 Thank you all for sharing your beautiful photos! Here's my favorite from my recent Panama Canal repositioning cruise on the Serenade of the Seas. My favorite excursion was to the Butterfly Farm in Aruba, and this is my favorite picture. Link to comment Share on other sites More sharing options...
2VaCruzers Posted December 6, 2008 #1636 Share Posted December 6, 2008 I recall that recent field experiments have shown that inside the Kelvin wake of a moving ship there can be two soliton-like envelopes, which extend to a long distance behind the ship. The source mechanism of these solitons has so far been attributed to the steady advance of a ship. In this note we suggest that ship oscillations, induced by ambient sea waves, provide a more plausible explanation for the initiation. Reducing the two-dimensional nonlinear Schrodinger equation to a simple form, we use existing theories to predict the wave envelopes in the far wake of a travelling ship in heave or pitch oscillations. While available data are insufficient to give a conclusive check of the theory, qualitative relevance can not be discounted. Way too early for me to digest all that...and it's almost noon!! In fact, I'm not sure I'll ever understand it, no matter what time of day it is :o Link to comment Share on other sites More sharing options...
Multi-Cruiser Posted December 6, 2008 #1637 Share Posted December 6, 2008 (edited) RitaVil - That's a terrific butterfly photo. Great lighting and composition. Thank you for sharing. Edited December 6, 2008 by Multi-Cruiser Link to comment Share on other sites More sharing options...
fuzzywuzzy Posted December 6, 2008 #1638 Share Posted December 6, 2008 Way too early for me to digest all that...and it's almost noon!! In fact, I'm not sure I'll ever understand it, no matter what time of day it is :o Kind of sounds like Einstein's theory of relativity. :confused: Link to comment Share on other sites More sharing options...
Genghis Khan Posted December 7, 2008 #1639 Share Posted December 7, 2008 Slightly confused auto pilot. I'll try and explain this in layman's terms! The qualitative features of this pattern are preserved if the point like disturbance is replaced by a disturbance of finite spatial extent which is more suitable to describe a real ship. However, the region around the ship and behind the ship up to a distance of several shiplengths (local wave disturbance region) shows a complex combination of breaking waves, bow and stern waves, very much depending on the speed, the shape and the propulsion system of the ship. The distribution of waves amplitudes behind the local disturbance region (free wave pattern region) depends on the ship as well. Thus, e.g., either the transverse or the diverging waves may dominate, and the cusp line may be more or less prominent. When the depth D approaches U2 /g, the wedge widens: For D=2V2/g , the wake angle is b=20.5° and for D=1.2 V2/g, b>35° , eventually approaching 90° at the singularity. D= V2/g (Havelock, 1908). For shallow water which in this context is defined by D<2V2/g, the wave pattern is very different: There are no transverse waves, and no cusp lines. The divergent waves form a wedge whose half angle depends on the water depth and on the speed of the ship, sinb=(gh)0.5/V. WHATS NOT TO UNDERSTAND! (i looked it up on the internets) Link to comment Share on other sites More sharing options...
Genghis Khan Posted December 7, 2008 #1640 Share Posted December 7, 2008 Link to comment Share on other sites More sharing options...
Minn.cruisers Posted December 7, 2008 #1641 Share Posted December 7, 2008 (edited) I read somewhere that many people from Minnesota are geniuses. :p I know we have very good school systems throughout the state. Could this be a corelation? Edited December 7, 2008 by Minn.cruisers Link to comment Share on other sites More sharing options...
judynorth Posted December 7, 2008 #1642 Share Posted December 7, 2008 (edited) I'll try and explain this in layman's terms![/url] The qualitative features of this pattern are preserved if the point like disturbance is replaced by a disturbance of finite spatial extent which is more suitable to describe a real ship. However, the region around the ship and behind the ship up to a distance of several shiplengths (local wave disturbance region) shows a complex combination of breaking waves, bow and stern waves, very much depending on the speed, the shape and the propulsion system of the ship. The distribution of waves amplitudes behind the local disturbance region (free wave pattern region) depends on the ship as well. Thus, e.g., either the transverse or the diverging waves may dominate, and the cusp line may be more or less prominent. When the depth D approaches U2 /g, the wedge widens: For D=2V2/g , the wake angle is b=20.5° and for D=1.2 V2/g, b>35° , eventually approaching 90° at the singularity. D= V2/g (Havelock, 1908). For shallow water which in this context is defined by D<2V2/g, the wave pattern is very different: There are no transverse waves, and no cusp lines. The divergent waves form a wedge whose half angle depends on the water depth and on the speed of the ship, sinb=(gh)0.5/V. WHATS NOT TO UNDERSTAND! (i looked it up on the internets) Yeah, what he said.:confused: Edited December 7, 2008 by judynorth Link to comment Share on other sites More sharing options...
Desert Cruizers Posted December 7, 2008 #1643 Share Posted December 7, 2008 Link to comment Share on other sites More sharing options...
cruiserbryce Posted December 7, 2008 #1644 Share Posted December 7, 2008 Great picture! Thank you! Link to comment Share on other sites More sharing options...
a-tx-brit Posted December 7, 2008 #1645 Share Posted December 7, 2008 GWoodman Radiance of the Seas Tendered in Kona Oct 16, 2008 Love that ship! Hope you don't mind....I took the haze out. Link to comment Share on other sites More sharing options...
Desert Cruizers Posted December 7, 2008 #1646 Share Posted December 7, 2008 a-tx, not at all, you must have the software to edit pictures. I was asked if we were moving when I took that one, I said yes,& he was surprised I was able to get that without any motion. Camera Canon A 520. I will post one more I really like of a group of Dolphin during our tour in Kona. Gay So Calif Link to comment Share on other sites More sharing options...
Desert Cruizers Posted December 7, 2008 #1647 Share Posted December 7, 2008 Sorry for passengers hand. Link to comment Share on other sites More sharing options...
Desert Cruizers Posted December 7, 2008 #1648 Share Posted December 7, 2008 Link to comment Share on other sites More sharing options...
Desert Cruizers Posted December 7, 2008 #1649 Share Posted December 7, 2008 Link to comment Share on other sites More sharing options...
hkolln Posted December 8, 2008 #1650 Share Posted December 8, 2008 I read somewhere that many people from Minnesota are geniuses. :pI know we have very good school systems throughout the state. Could this be a corelation? COOL! We're going to MN in July 2009 for a trip thru WI, IA, MN and SD I need to meet some smart people after having a 9 yr old and 14 yr old LOL Link to comment Share on other sites More sharing options...
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