USCG Response Boat-Medium: Self-righting Test

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Author Topic:   USCG Response Boat-Medium: Self-righting Test

saumon posted 10-15-2014 10:49 PM ET (US)
I thought it was interresting to watch the self-righting test of the new generation USCG response boat-medium:
http://www.youtube.com/watch?v=jXF-TjOjD5k

jimh posted 10-15-2014 11:14 PM ET (US)
That is an impressive demonstration.
As it happens, I just saw one of these USCG RB-M 45-foot jet drive boats on patrol last weekend. I also had a chance to go aboard one in 2011. See
http://continuouswave.com/ubb/Forum4/HTML/007832.html
Dave Sutton posted 10-16-2014 08:06 AM ET (US)
Interesting that the cabin structure provides a lot of the required buoyancy for the evolution. It would be interesting to see how she tenders to the sea when her main cabin door is open and her cabin is downflooding in the same situation.
Dave
.
endus posted 10-17-2014 11:52 AM ET (US)
Cool. Our first voyage in our new boat we got stopped by a 33' SPC-LE which the guys said was brand new to them.
The other day I saw what I now realize must have been the RB-M cruising around the harbor. I was assuming it was the same type that pulled us over, but it struck me that I did not remember an M240 being mounted on the bow of the one that pulled us over. :) I would have asked them whether they got a chance to shoot it yet if it had been there.
I didn't realize the RB-M was self righting. I thought that was limited to the 45 motor life boat, which I would [like] to own. I've heard that they sometimes come up for sale on the private market, but they're a little out of my price range. :D
A very old photo of USCG 47233 before I had fast enough lenses not to have to fake the out of focus background. ;)
http://www.desolatemetropolis.com/dm/archives/color/post_47.html
jimh posted 10-17-2014 12:41 PM ET (US)
The 45-foot motor life boat would probably be very expensive to operate. The 45-foot modern Response Boat-Medium looked like it could burn some fuel, too. It has twin 825-HP turbocharged diesel engines.
kwik_wurk posted 10-17-2014 01:40 PM ET (US)
What is interesting on the RBM is the engine room does not flood or take on water during a knock-down. -- I actually did sea trials on the first builds with Kvichak.
jimh posted 10-23-2014 01:28 PM ET (US)
DAVE--I noticed, too, that the sealed-off cabin structure gave the inverted hull a lot of buoyancy and help create the righting moment. I suppose when the boat is underway in big seas the standard operating procedure will call for the cabin door to be shut and sealed.
Dave Sutton posted 10-23-2014 09:12 PM ET (US)
My bet is that they are not self-righting with the cabin door open. But again, they are not a substitute for a true motor lifeboat. Pretty good performance for a boat not designated as being fully surf-capable.

Dave

.
contender posted 10-23-2014 09:22 PM ET (US)
I thought that all of the 30-45 ft coast guard vessels were require to do this, I remember seeing a video a least 20 years ago requiring the coast guard boat to do this...
jimh posted 10-25-2014 10:20 AM ET (US)
The requirements for a boat purchased by the Coast Guard of the USA are typically set out in the bid proposal. Check the bid proposal for a particular Coast Guard boat to see it the bid proposal contained requirements for self-righting. The government is quite transparent about this. If interested in finding this information, it should be rather easy to locate. I don't think a 20-year-old motion picture presentation is going to have any significance on a contract award made today.

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Author	Topic: USCG Response Boat-Medium: Self-righting Test
saumon	posted 10-15-2014 10:49 PM ET (US) I thought it was interresting to watch the self-righting test of the new generation USCG response boat-medium: http://www.youtube.com/watch?v=jXF-TjOjD5k
jimh	posted 10-15-2014 11:14 PM ET (US) That is an impressive demonstration. As it happens, I just saw one of these USCG RB-M 45-foot jet drive boats on patrol last weekend. I also had a chance to go aboard one in 2011. See http://continuouswave.com/ubb/Forum4/HTML/007832.html
Dave Sutton	posted 10-16-2014 08:06 AM ET (US) Interesting that the cabin structure provides a lot of the required buoyancy for the evolution. It would be interesting to see how she tenders to the sea when her main cabin door is open and her cabin is downflooding in the same situation. Dave .
endus	posted 10-17-2014 11:52 AM ET (US) Cool. Our first voyage in our new boat we got stopped by a 33' SPC-LE which the guys said was brand new to them. The other day I saw what I now realize must have been the RB-M cruising around the harbor. I was assuming it was the same type that pulled us over, but it struck me that I did not remember an M240 being mounted on the bow of the one that pulled us over. :) I would have asked them whether they got a chance to shoot it yet if it had been there. I didn't realize the RB-M was self righting. I thought that was limited to the 45 motor life boat, which I would [like] to own. I've heard that they sometimes come up for sale on the private market, but they're a little out of my price range. :D A very old photo of USCG 47233 before I had fast enough lenses not to have to fake the out of focus background. ;) http://www.desolatemetropolis.com/dm/archives/color/post_47.html
jimh	posted 10-17-2014 12:41 PM ET (US) The 45-foot motor life boat would probably be very expensive to operate. The 45-foot modern Response Boat-Medium looked like it could burn some fuel, too. It has twin 825-HP turbocharged diesel engines.
kwik_wurk	posted 10-17-2014 01:40 PM ET (US) What is interesting on the RBM is the engine room does not flood or take on water during a knock-down. -- I actually did sea trials on the first builds with Kvichak.
jimh	posted 10-23-2014 01:28 PM ET (US) DAVE--I noticed, too, that the sealed-off cabin structure gave the inverted hull a lot of buoyancy and help create the righting moment. I suppose when the boat is underway in big seas the standard operating procedure will call for the cabin door to be shut and sealed.
Dave Sutton	posted 10-23-2014 09:12 PM ET (US) My bet is that they are not self-righting with the cabin door open. But again, they are not a substitute for a true motor lifeboat. Pretty good performance for a boat not designated as being fully surf-capable. Dave .
contender	posted 10-23-2014 09:22 PM ET (US) I thought that all of the 30-45 ft coast guard vessels were require to do this, I remember seeing a video a least 20 years ago requiring the coast guard boat to do this...
jimh	posted 10-25-2014 10:20 AM ET (US) The requirements for a boat purchased by the Coast Guard of the USA are typically set out in the bid proposal. Check the bid proposal for a particular Coast Guard boat to see it the bid proposal contained requirements for self-righting. The government is quite transparent about this. If interested in finding this information, it should be rather easy to locate. I don't think a 20-year-old motion picture presentation is going to have any significance on a contract award made today.