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Archive for the ‘Maritime’ Category

SCUBAPRO SUNDAY – APNEA Snorkel

Sunday, February 9th, 2020

There are two schools of thought when it comes to carrying a snorkel when you dive in the civilian world, and I guess in the military world also. It is to carry or not carry a snorkel. You are taught to have one to save air when you are close to the surface for whatever reason so you can use it and not the air in your tank. When I first started diving in the teams, you had to have a snorkel on us. We would get issues a cheap old school “J” type one with the big orange stickers on it you had to peel off and then you would have to cut a couple of inches off of it and keep with you in case you had to work around piers or whatever so you could save O2. Well, I never used it and stopped carrying it as soon as I could. But that doesn’t mean I would have never used it or could have; I choose not to have it.

Like everything else in the world, technology is growing and growing. Once a problem is fixed, companies move onto the next one. So, the issues associated with the old “J” snorkel have been fixed; that is not to say that companies still do not make them have them; they are still around. But now there are all kinds of snorkels out there. There are several different types of snorkels Classic (J type), Simi-dry, Dry, and Flexible, to name a few.  

So why carry a snorkel? A snorkel helps on the surface when you are in rough water. You can keep your head in the water and not drink as much seawater when you are just floating waiting to be extracted. It is also useful when you are working in the water waiting for a helo pick up, and you are under its rotor wash, or when you are doing a K duck or a swamp duck. It is also helpful to have when you jumped into the water, and you have to undo some of your parachute lines that might be tanged in your fins or whatever.  It makes it easier to breathe on the surface without lifting your head out of the water if you have to swim to a boat or shore for some reason.  

Diving in the military is different than as a civilian as you would never leave your snorkel hanging on your mask during a dive. This is why we would cut it down a little so that we could tuck it away or you would hang it off the bottom of your LAR V with heavy rubber bands. But with today’s technology, most companies have one that you can roll-up.  For SCUBAPRO, it is the Apnea Snorkel, it was launched in 2015 for Apnea divers and won the SCUBALAB’s 2015 best buy.  

The SCUBAPRO Apnea Snorkel is a foldable freediving snorkel design. Made from a soft and flexible non-toxic silicone, SCUBAPRO Apnea Snorkel easily attaches to your mask strap when being used. When not needed, it can be rolled up and stowed away in a pocket. When it’s time to do some more stuff on the surface, it pops right back into shape. The Apnea’s upper barrel can be removed if you prefer to use a shorter pipe. Without question, this is an easy-to-use and very versatile surface breather. Functional yet straightforward traditional “J” Snorkel design. No valves that can leak. Snorkel is specifically for spearfishing and free diving. The contoured shape of the silicone mouthpiece and the air tube has been ergonomically designed to follow the profile of the spear fisherman’s face to reduce its visibility significantly during the dive. This flexibility is also advantageous when around piers or rocks.

ADS Showcases Updates To Hydroid REMUS 600 Unmanned Underwater Vehicle

Wednesday, February 5th, 2020

In the past, Hydroid’s REMUS Underwater Vehicle would complete its mission and it would take 10 hours or more to download the datasets. With the addition of the new HISAS 2040 Module, the data is processed during the mission, so users get high-def images in near real time. Here is the ADS press release.

Hydroid Integrates HISAS 2040 Module with In-Mission Processor onto a REMUS 600 Unmanned Underwater Vehicle.

The in-mission processor (pictured in red) allows real-time processing of HISAS data, giving operators the ability to download high-resolution images immediately when the vehicle returns from its mission.

Unmanned underwater vehicles (UUVs) play a crucial role within the defense space with their ability to carry out unique missions. UUVs provide many advantages to the fleet with their autonomy and long endurance, making missions safer and easier to accomplish. Their modularity allows for them to be outfitted with different payloads for varying mission requirements.

REMUS 600 UUV applications include:

·         Mine Countermeasure Operations

·         Hydrographic Surveys

·         Search & Salvage Operations

·         Marine Research

·         Environmental Monitoring

·         Debris Field Mapping

View Product Details

The REMUS 600 UUV from Hydroid, Inc. is positively buoyant and is designed to operate to depths of 600 meters. With mission duration capability of up to 24 hours, the REMUS 600 delivers unprecedented endurance. Sonar technology is used on these UUVs to capture images for organic mine countermeasure, hydrographic surveys, area searches, and surveillance and reconnaissance.

HISAS 2040 provides up to 2cm by 2cm resolution across a 300-meter swath. Synthetic aperture sonar uses algorithms to synthetically lengthen the aperture, providing consistent resolution across the entire swath, both along and across track, as opposed to traditional real aperture side scan sonars. Because of the high resolution of HISAS, the files are very large and can take several hours to download after a mission is complete.

To help solve this problem, Hydroid, Inc. integrated an in-mission processor on a REMUS 600 Unmanned Underwater Vehicle (UUV) with the KONGSBERG High-Resolution Interferometric Synthetic Aperture Sonar (HISAS) 2040.

Pictured: High-resolution Interferometric Synthetic Aperture Sonar (HISAS) 2040 images from a REMUS 600 Unmanned Underwater Vehicle

With the in-mission processor, HISAS data is processed and compressed in real-time along with the navigation data, allowing immediate download of the sonar imagery when the vehicle returns from its mission through a 10GB Ethernet switch. This is ideal for time-sensitive missions like mine countermeasures, where faster data access means safer, more efficient operations. Other HISAS applications include hydrographic surveys, pipeline inspection and rapid environmental assessment.
Learn more about Hydroid’s core capabilities »

SCUBAPRO Sunday Lionel “Buster” Crabbe

Sunday, January 26th, 2020

I have showed this before, but January 26th is Busters birthday, so I thought I would show it again. Buster is the father of combat diving in the UK. Happy Birthday Buster. The below link is his story and the one below that is the movie The Silent Enemy.

www.historic-uk.com/HistoryUK/HistoryofEngland/Lionel-Buster-Crabb

 

 

SHOT Show 20 – Team Wendy

Wednesday, January 22nd, 2020

US Coast Guard Rescue Swimmers have completed a COTS buy of the Team Wendy Exfil LTP in Rescue Yellow. The helmet is EN 1385 verified for swift water rescue.

MAS High Speed Boat Training

Sunday, January 19th, 2020

MAS and FROGSTRONG are hosting a Response Vessel Maneuvering/High Speed piloting course on SAFEBOAT 25 DEFENDER

WHO: Open to the public

WHEN: 23 March – 27 March 2020

WHERE: Destin FL, USA

PRICE: Upon request Point of contact: contact@mas-sot.com

All necessary equipment will be provided.

Contact us if you need assistance regarding accommodations.

Course details will be provided upon request.

Murray C. will be the lead instructor for that course, serving over 25 years as a U. S. Navy SEAL and five years as a coxswain in the United States Coast Guard. Skilled Navigator, wide experience in piloting offshore and near shore vessels, 100 ton Captain License.

SCUBAPRO Sunday – Australian Z and M Special Units WWII

Sunday, January 19th, 2020

I wanted to something for our brother in Australia, they are the only country that has supported the U.S. in every war we have been in since WWI. When I was growing up, “Attack Force Z” was and still is, one of my favorite movies. I have always wanted to be inserted by Klepper kayaks and blow up ships in harbor or an old bridge. 

SOE-Australia (SOA) was a WWII Special Forces and covert operations organization operating in the Pacific theater behind Japanese lines. It was made up of men and women from Australian, British, New Zealand, Canadian, South African, Indonesian, Timorese and Malay. SOA fought a secret, undercover war against the Japanese occupying force on the islands north of Australia. With the success of the British SOE unit in the European theater, Winston Churchill ordered that a similar unit be formed in the pacific. SOA was made up from many different units like the Royal Australian Navy’s  Coastwatcher’s, a propaganda unit the Far Eastern Liaison Office (FELO), the Secret Intelligence Service (SIS/SIA), a Dutch East Indies intelligence unit (NEFIS), the United States’ Philippine Regional Section (PRS, operating in the southern Philippines) and an Australian/British Special Operations group, which was to carry out missions behind enemy lines. The SOA took part in hundreds of covert operations against the Japanese and were directly responsible for eliminating thousands of enemy troops and sinking tons of ships and supplies, they paid a high price with more than eighty SOA commandos losing their lives. To maintain security, the SOA was given a cover name – Inter-Allied Services Department (IASD, mostly referred to as the ISD). It had British SOE agents that had escaped Singapore and the Dutch East Indies before it fell to the Japanese. That helped get it up and running.

SOA operators could operate in parties as small as two men, ISD Operatives faced overwhelming odds against a barbaric and increasingly desperate enemy. They conducted similar operations as many other SF groups in WWII. From Jedburgh’s type of missions (training indigenous guerrilla forces) to conduct direct action missions and raiding targets of opportunity. They also performed special reconnaissance missions close to enemy forces behind the lines.

The ISD men kept quiet about their exploits for over 50 years, and even today, the full story has never really been made public. The whole story of ISD operations during WWII is one that has been largely overlooked and misunderstood for the past 75 years. One of the main reasons for this is the misunderstanding that ISD was named Z or M Special Unit. The Z and M just referred to their administrative arm of the units. Z Special Unit was also used for requisitioning stores and transport through Australian Army channels. There are cases where Colonels were removed from transport aircraft to make room for ISD Corporals. Such was the administrative power of the Z Special Unit. So, this is how it was broken down, for Australian Army personnel and civilians assigned to ISD, and later to SRD, and as such, Z Special Unit appears on the service records of every Australian soldier who was assigned to either of those organizations. Another reason for some of the confusion is that in early 1943 the SOA was giving a new code name the Services Reconnaissance Department (SRD), and the term SOA was only to be used at the highest level. Z Special Unit does not appear on the service records of RAAF, RAN or British, NZ, Canadian, or South African personnel assigned to ISD or SRD since they weren’t enlisted in the Australian Army. However, Z Special Unit or Z Force became a common term in the post-war years, even among SRD Veterans. Although it is historically inaccurate to refer to the Special Operations as Z Special Unit. So, where do M Special units fit in? During the war an Allied Special Forces Reconnaissance Team under the command of the Services Reconnaissance Department (SRD.) It was the successor of the Coastwatcher’s unit. Raised in Queensland, Australia, in 1943, the unit operated behind enemy lines for long periods in the Pacific theatre, collecting intelligence such as enemy troop movements and shipping details. It was disbanded at the end of the war in 1945.  

Unlike its sister unit, M Special Unit wasn’t as well known for direct action missions. Z Special Unit was comprised of about 81 members and generally inserted via small boat, submarine, or airplane and conducted quick hit and run missions. They would also conduct intelligence-gathering operations. M Special Unit, on the other hand, operated behind enemy lines for extended periods and did long-range intelligence collection; as such, they tried to go undetected and, as such rarely engage the enemy.  

Also, all personal assigned to ISD were still listed as attached to the parent unit they came from. The reason for this was to help maintain secrecy. It was also used as a way to hide the funding for the ISD. As one of the best ways to keep something secret is never to show that money is going to them. The units never had an official insignia. You will often see a Z of M with a dagger through it. This was not made until 1970 and unfortunately, is mistaken for the units WWII symbol. 

One of ISD/SRD’s most famous Operations was called Jaywick. They used a 68-ton wooden ship. British authorities had seized the Kofuku Maru in Singapore following Japan’s entry into the war. In 1943 she was renamed Krait and assigned to the SRD. The objective of Operation Jaywick was for SRD members to attack Japanese shipping in Singapore. SRD commandos paddled into Singapore harbor in kayaks and attached limpet mines to Japanese enemy shipping. The stealthy raiders sank seven ships and about 39,000 tons of supplies and equipment before escaping home to Australia. By the time they returned nearly seven weeks later, the crew of 14 had carried out one of the most successful clandestine raids in Australian history. Throughout the war, the 70-foot wooden-hulled boat involved in the Jaywick raid, MV Krait, sank more shipping than any other ship in the Australian navy.  

In a subsequent mission to Jaywick called Operation Rimau, the raiding party was detected by the enemy, hunted down and executed. Seventeen of SRD members lie in graves at Kranji War Cemetery in Singapore. In Operation Copper, eight men landed on an island off New Guinea to disable enemy guns before the Allied landing. Discovered by the Japanese, three commandos were captured, tortured, and executed. Four others escaped and fled out to sea, but only one made it home.

No matter what their name was or what they are called now, the units of WWII are the forefathers of today’s Special Forces in Australian and New Zealand and helped end the war.

www.australiansas.com/Establis%20SF

 

SCUBAPRO Sunday – Extra Masks

Sunday, January 12th, 2020

When you first learn how to dive, whether it is a military school or civilian. They will talk about, extra items you should carry with you. One of the most important is an extra mask/ mask strap. When I was going through training, we were doing our final FTX dive. It was a ship attack in San Diego harbor on a ship that was used for paintball training for the fleet. I was not the driver, so my job was to hang out and make sure my dive buddy didn’t hit his head on the pier, ship, or anything else. About 10 minutes in my mask started to flood. No matter what I did, I couldn’t get it to stop. I checked my hood, the strap, the seal, took it off and put it back on. I had no hair at that point, so that wasn’t it. Nothing that I did fixed it. As we were in training, we were not allowed to have two masks. So, I spent 3 hours with my mask filling up and me draining it. As I was doing this, my swim buddy hit his head twice. After the dive, I blamed it on him saying he was swimming too fast, and that was why he kept hitting his head. He knew I was lying, and I ended up buying him a steak dinner. When I got to a team and went through STT diving, the first thing I did was get an extra mask. I have never dove without two masks ever since.  

As you can probably tell, I didn’t go through training last year, it has been a while, and there have been a lot of advancements in gear that is used on the land and in the water. So here are just a few things to think about before you dive.

Let start at the beginning of the dive. You are about to jump in the water you put your mask on and the strap breaks. At some point, almost all straps will break. Rubber can dry rot over time. It will most likely happen when you are putting it on, as this is the time you stretch it the most. This is why all dive supervisor kits should have extra mask and fin straps. If they have one, use theirs before you use the one on you. There are new mask straps called Comfort straps from SCUBAPRO. They are made from a similar material to ski goggles, and they will not break. At some point, they will lose their elasticity, but again this should only happen at the start of a dive, and they are straightforward to change out.  

Now you are in the water, and you are turtle-backing to the point you are going to start your dive; it is cold; the seas are crap, and you are getting pushed around. You and your swim-buddy get to your start point as you are putting you mask on a penguin pops up out of the water. Your swim-buddy screams and throws his mask and it sinks to the bottom. He goes by the theory of (travel light and mooch) so he doesn’t have an extra mask. But you were taught to have an extra mask, so you give him yours. An excellent place to keep an extra mask is in an old M16 pouch on the belt that holds your rebreather to your waist. It is right at hand and easy to find in the dark. These are one of the best pouches ever made if it unbuckled anything inside won’t dump out. It was designed to hold three fully loaded 30round magazine upside down and not lose anything, even when unbuckled. I usually put a extra mask and fin strap in it.  

You can carry an extra mask or just the strap. If you are doing a longer dive and you have to cut back on the size of additional items, some people like to carry a smaller mask as their extra one. There are some excellent smaller masks out there. The Scubapro’s Steel Pro is a great mask if you need to carry something smaller. It uses the same comfort strap and can be tucked away in a small pocket without doing any harm to the skirts.  

Now let’s say you are on a dive. You are sent in to cut the steel net that will keep your submarines from getting into shore, and you come upon some other combat swimmers. They were sent out to stop you. While you are fighting underwater, you know with knives. In the heat of the battle, you lose your mask. So, once you win the fight (let’s hope you have been to underwater knife fight school) (if there is one, I am not saying there is) (I signed paperwork saying I wouldn’t talk about it). Now since you have an extra mask, you can pull it out and slap it on and go back to cutting the net. 

 

All kidding aside, having an extra mask and/or mask strap will make your life a lot better, something else you can put in there is some defog, that you can put on your mask if it keeps fogging or if you are putting your extra one on that hasn’t been treated. Again, this will make your life underwater a lot better. 

 

 

Jaws Spit is nice and thick and can be applied underwater, so it is ideal for use on a mask underwater, and it is small and can be kept in the same mag pouch as the extra mask. It is also good for use before the dive.

 

If you never have to use any of this stuff when you are underwater, you are a lucky person, but I hope you won’t take that chance, and you keep this stuff on you or make your swim buddy carry it. (travel light and mooch)

SCUBAPRO Sunday – Dry Suits

Sunday, January 5th, 2020

Now that is cold, I thought it would be good to share some information about Dry suits and Semi- Dry suit. David Rhea is a SCUBAPRO ambassador and one of the best explorer divers in the world. The videos are made to advertise SCUBAPRO gear but there is also some good information in them about how to properly wear and maintain your suits.

www.youtube.com