Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-09-2015, 09:30   #1
Registered User

Join Date: Jan 2015
Location: Rock Hill, SC
Posts: 24
Chile Earthquake 8.3

Background:
My wife and I are planning our early retirement (5-7yr) plan. We are just being introduced to sailing. I was never really a boat person even though I grew up on Long Island NY. My wife has been more exposed to the boating world but not as an owner.

I am surprise nothing has been mentioned about this. So my question, concern, curiosity is the risk to the cruisers being caught out in the ocean when a tsunami is moving from Chile to Hawaii? Sailboats only go so fast. It takes what? 2 1/2 to 3 weeks to cross from Galapagos to the Marquises Islands. is there enough time to get to safety on this crossing before the tsunami could reach you? Also lets say you were by Chile at this time. When a tsunami starts after an earthquake how safe you are on your boat in that area? Say in a marina or anchored or just a few miles away sailing in or away at the time of the earthquake?

Sadly(maybe not) this is not deterring me from my plans when thinking worse cases I can imagine. is that bad?
__________________

__________________
Breenme is online now   Reply With Quote
Old 17-09-2015, 09:42   #2
Registered User
 
deckofficer's Avatar

Join Date: Feb 2011
Location: Northern and Southern California
Boat: too many
Posts: 4,198
Images: 4
re: Chile Earthquake 8.3

I have no experience being in a tsunami wave so I'll just repeat what I learned at the maritime academy. First you will not outrun it, as it can cover the distance of the Pacific in 24 hours. The good news though if your in the path and in deep water you will be just fine. The wave gets large and destructive when it reaches shallow water.
__________________

__________________
Bob
USCG Unlimited Tonnage Open Ocean (CMA)
http://tbuckets.lefora.com/
deckofficer is offline   Reply With Quote
Old 17-09-2015, 09:48   #3
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,045
Re: Chile Earthquake 8.3

Nothing on the water can outrun a tsunami, but it's energy that is travelling at the speed of an airliner, not the water, and I believe a tsunami is essentially undetectable by a boat in the open ocean
__________________
a64pilot is offline   Reply With Quote
Old 17-09-2015, 11:08   #4
Registered User

Join Date: Jan 2015
Location: Rock Hill, SC
Posts: 24
Re: Chile Earthquake 8.3

Thanks. I figured nothing to bad being no one was talking about it. But wife worries more and would never believe me i I told her o big deal per say. best to have an independent source with experience in this.
__________________
Breenme is online now   Reply With Quote
Old 17-09-2015, 14:39   #5
Moderator
 
JPA Cate's Avatar

Join Date: Nov 2011
Location: aboard, cruising in Australia
Boat: Sayer 46' Solent rig sloop
Posts: 10,673
Re: Chile Earthquake 8.3

Well, we had a tsunami warning for between 1 and 3 am this morning. We are in B. Kuto at Isle des Pins in New Caledonia. If you bring it up on open CPN, you will see that we are on the west, and well protected by lots of geological and marine structure. We decided not to leave the anchorage. We slept through what was a non-event here. I must note that we have left other anchorages in the past to get to deep water and waited for the all clear.

Now, if Australia had had the 8.3 quake, we would definitely have sought out deeper water. Oz is close to us; there would be little time for it to lessen in strength, and there is little to block it coming from there. The threads of energy generated by the quake would have straight and easy access to us here. The direction of travel of the shock waves in relation to where you are anchored is an important factor in the decision.

However, on the open ocean, you would never notice it.

Ann
__________________
Ann, with Jim, aboard US s/v Insatiable II, in Oz, very long term cruisers
JPA Cate is online now   Reply With Quote
Old 17-09-2015, 15:15   #6
Registered User
 
El Pinguino's Avatar

Join Date: Aug 2013
Location: Punta Arenas ahorra
Boat: 39' Westerly Sealord
Posts: 3,952
Re: Chile Earthquake 8.3

Quote:
Originally Posted by Breenme View Post
Background:
My wife and I are planning our early retirement (5-7yr) plan. We are just being introduced to sailing. I was never really a boat person even though I grew up on Long Island NY. My wife has been more exposed to the boating world but not as an owner.

I am surprise nothing has been mentioned about this. So my question, concern, curiosity is the risk to the cruisers being caught out in the ocean when a tsunami is moving from Chile to Hawaii? Sailboats only go so fast. It takes what? 2 1/2 to 3 weeks to cross from Galapagos to the Marquises Islands. is there enough time to get to safety on this crossing before the tsunami could reach you? Also lets say you were by Chile at this time. When a tsunami starts after an earthquake how safe you are on your boat in that area? Say in a marina or anchored or just a few miles away sailing in or away at the time of the earthquake?

Sadly(maybe not) this is not deterring me from my plans when thinking worse cases I can imagine. is that bad?
If you are in a Chilean port in the vicinity of the epicentre life will get 'interesting'.... google Coquimbo or Iquique together with Tsunami and look at the pics. Or for a better idea of what a bad one looks like just google '2010 chile tsunami'
Offshore in deepwater no probs but if you are alongside when the Tsunami sirens go off best to abandon your boat and head for the hills...literally.
El Pinguino is offline   Reply With Quote
Old 17-09-2015, 15:48   #7
Senior Cruiser
 
Jim Cate's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 11,450
Re: Chile Earthquake 8.3

There were lots of amateur videos of the effects of tsunami in Japan after the Fukushima quake. Frankly, they were simply terrifying! And lots of moored and anchored yachts were lost or damaged in the Indonesian/Malaysian tsunami a few years back.

But offshore, even fairly close in, floating objects are not much affected.

Jim
__________________
Jim and Ann s/v Insatiable II , lying Port Cygnet, Tasmania once again
Jim Cate is online now   Reply With Quote
Old 17-09-2015, 16:07   #8
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,045
Re: Chile Earthquake 8.3

I was thinking weigh anchor and motor out would be better than trying to get ashore, but I guess that really depends on how far you have to go to get to deep water.
Maybe it's not smart of me, but in really bad weather or something like this, I want to be far off shore, to have some maneuvering room. I got caught in a really bad squall many years ago just outside of Tampa Bay in a 45' Sportfish, and was being beaten back towards shore, I lost considerable ground.


Sent from my iPad using Cruisers Sailing Forum
__________________
a64pilot is offline   Reply With Quote
Old 17-09-2015, 16:30   #9
Registered User
 
DumnMad's Avatar

Join Date: Mar 2012
Location: Nelson NZ; boat in Brisbane
Boat: 45ft Ketch
Posts: 1,247
Re: Chile Earthquake 8.3

When you are far away from the centre its like a sudden rise in tide level. No problem unless you are in an estuary or channel where tidal flow could suddenly change and sweep you into trouble.
__________________
DumnMad is offline   Reply With Quote
Old 17-09-2015, 16:55   #10
Moderator
 
Don C L's Avatar

Join Date: Sep 2014
Location: Channel Islands, CA
Boat: 1962 Columbia 29 MK 1 #37
Posts: 4,384
Images: 34
Re: Chile Earthquake 8.3

If you are in deep water you'll likely feel nothing. If you are anchored you have to judge how fast you can get your boat to deep water vs. how fast you can get yourself to high ground ashore.
__________________
DL
Pythagoras
1962 Columbia 29 MKI #37
Don C L is offline   Reply With Quote
Old 17-09-2015, 17:26   #11
Registered User

Join Date: Jun 2009
Location: still in a roll of fiberglass around Cape Town
Boat: Leopard 40 (new model)
Posts: 1,201
Re: Chile Earthquake 8.3

Quote:
Originally Posted by a64pilot View Post
Nothing on the water can outrun a tsunami, but it's energy that is travelling at the speed of an airliner, not the water, and I believe a tsunami is essentially undetectable by a boat in the open ocean
+1. The speed in deep water is 524 knots; you can roughly calculate arrival time based on that.

The tsunami is not detectable if far away from the coast (say 20 miles) AND in deep water, so we were told when there was a tsunami warning in the Galapagos. I will never forget the nervousness pulling up the anchor at night to leave port to reach open/deep water because there was a tsunami on the way.

In the Pacific at least, tsunami warnings are one good reason to keep the VHF close you you and on all the time even when you go ashore!
__________________
svlamorocha is offline   Reply With Quote
Old 17-09-2015, 17:40   #12
Registered User
 
DumnMad's Avatar

Join Date: Mar 2012
Location: Nelson NZ; boat in Brisbane
Boat: 45ft Ketch
Posts: 1,247
Re: Chile Earthquake 8.3

NZ is some 5,500 miles away from Chile - the waves 300mm to 500mm high, wave period around an hour or so. No big deal but in shallow estuaries with narrow entrances there is a sudden change in tide flow that could catch people out.
For areas where the tide range is normally 2m in a 12 hour cycle a 0.5m high tide cycle in 1 hour would create unexpectedly high current flows.
__________________
DumnMad is offline   Reply With Quote
Old 18-09-2015, 04:11   #13
Registered User
 
El Pinguino's Avatar

Join Date: Aug 2013
Location: Punta Arenas ahorra
Boat: 39' Westerly Sealord
Posts: 3,952
Re: Chile Earthquake 8.3

Quote:
Originally Posted by DumnMad View Post
NZ is some 5,500 miles away from Chile - the waves 300mm to 500mm high, wave period around an hour or so. No big deal but in shallow estuaries with narrow entrances there is a sudden change in tide flow that could catch people out.
For areas where the tide range is normally 2m in a 12 hour cycle a 0.5m high tide cycle in 1 hour would create unexpectedly high current flows.
Dunno about that... most hereabouts probably don't recall the 1960 tsunami.... Tsunami hits Hawaii - May 23, 1960 - HISTORY.com
..and the more recent one offshore from Thailand did more than a little damage in Sri Lanka.

I've dodged a couple in recent years... the Iquique one last year ... had gone back to Anto a short while before. A yacht that I had been alongside in Iquique turned up in Anto soon after... I think they had a bit of a fright... everything closer inshore had ended up parked on the seawall.

My previous terremoto event was in Seno Aysen in April 2007...... we were almost on top of the epicentre in about 300 metres.... two major shocks about a minute apart... felt as if we had run aground on gravel.... the result was that the side of a mountain a few miles ahead fell into the Seno... a big wave ( a serious big wave etched in my memory forever) but not really a tsunami... only killed 13 but they were the only 13 in the area... salmonera workers. If we had got underweigh 30 minutes earlier that day we would have been brown bread as we would have been abeam of the slip.

In Chile if ashore or on your yacht alongside you *will* hear the alarms and in most cases putting to sea isn't an option....

Some pics from Seno Aysen... a breaking sea coming back down a gully, some slips alongside the yacht and some very lucky congrio fishermen, and the slip itself.... still smoking a few hours later
Attached Thumbnails
Click image for larger version

Name:	2891710.jpg
Views:	114
Size:	146.4 KB
ID:	109265   Click image for larger version

Name:	2891752.jpg
Views:	115
Size:	112.5 KB
ID:	109266  

Click image for larger version

Name:	2891773.jpg
Views:	108
Size:	81.5 KB
ID:	109267  
El Pinguino is offline   Reply With Quote
Old 18-09-2015, 04:22   #14
Senior Cruiser
 
atoll's Avatar

Cruisers Forum Supporter

Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 9,311
Images: 75
Re: Chile Earthquake 8.3

I experienced first hand the boxing day tsunami in Thailand,we were about 2miles offshore in 15 meters of water off the island of koh lanta,we felt nothing apart from some swirling currents shortly after seeing the breaking waves on the shoreline.

boats anchored inshore in less than 7m of water hit the bottom and quite a few lost their masts as a result!
__________________
my catamaran building project updates http://www.cruisersforum.com/forums/...36#post2502136
atoll is offline   Reply With Quote
Old 18-09-2015, 04:37   #15
Registered User
 
El Pinguino's Avatar

Join Date: Aug 2013
Location: Punta Arenas ahorra
Boat: 39' Westerly Sealord
Posts: 3,952
Re: Chile Earthquake 8.3

Quote:
Originally Posted by atoll View Post
I experienced first hand the boxing day tsunami in Thailand,we were about 2miles offshore in 15 meters of water off the island of koh lanta,we felt nothing apart from some swirling currents shortly after seeing the breaking waves on the shoreline.

boats anchored inshore in less than 7m of water hit the bottom and quite a few lost their masts as a result!
That I think is a major issue.... even if your boat stays put...water she go away before she come back..... Where I had been in Iquique we had maybe 1 or 2 metres under the keel.... I think we would have hit the bottom with a bit of a thump
__________________

El Pinguino is offline   Reply With Quote
Reply

Tags
Chile

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Zealand to Chile, then cruising Chile Charioteer Navigation 4 08-08-2012 01:03
Chile Hit by 8.8 Earthquake - Tsunami Warnings for Hawaii, Australia, S. America Kefaa Cruising News & Events 21 28-02-2010 03:24
Major Earthquake / Tsunami / South Pacific! Lodesman Pacific & South China Sea 31 09-10-2009 18:58
6.8 magnitude earthquake strikes off Guatemalan coast CaptainK Pacific & South China Sea 0 13-06-2007 20:59
Earthquake Zeus Off Topic Forum 13 08-04-2007 00:51



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 13:36.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.