Next Meeting: Tuesday, February 21, 2012
Andrews University, Biology Amphitheater, Price Hall
Berrien Springs, Mi Meeting starts ~ 7:30 p.m.
(Every 3rd Tuesday of every month except December)
For those of you receiving or attending the MUD Club monthly notice for the first time, The MUD Club holds an informal meeting with the general sequence for the meeting being to introduce visitors, present club Information & general Dive related news, ask who has other dive related news, are there any “Show & Tell” items or Do-it-Yourself (DIY) projects, Tale’s of current diving experience and/ or lessons learned, then Open Session.
Significant items for February
Dues for 2012. If you are interested in renewing your membership, please settle up at the meeting or make out a check to Ric Kling for $15.00 and send to Ric at 5191 Territorial Road, Benton Harbor, Mi. 49022 (identify that it is for 2012 MUD Dues). Please do this before March12 so that the member phone books can be available at the March meeting.
Club Phone Book: Please make sure we have your current phone number, email address, spelling, and anything else you want in the book under your name and send that to Sir Larry at “SLON65@att.net”
Date for the Club Steak Fry & Dive. We need to firm up this date tentative month suggested is in August. What date say yea?
Dive Events: All dive dates & places are listed in the Events Schedule on the club website at http://mudclub.scubaobsessed.com/. To add an activity contact Mack or Darrin and we will fill in the anticipated event or dive, its date, and if known identify the “go to” person for that dive. If you do not have computer access and want a monthly listing let Mack know and he will include it in your copy of the monthly newsletter.
Last Meeting Highlights:
Club Officers for 2012 are: Bob Sweeney (Pres), Don McAlhany (V.P.), Ric Kling (Treas); Treasure report given, dues are due ($15yr), need club phone book corrections/ information; No show & tell; Discussed Singer Lake access owner ship & Paw Paw Lake 2012 Poisoning schedule (Mid April); Results of pool event cost discussed ($75hr avg- YMCA/ AU/ Bridgman); OWUW entry fee reduces with DAN card; multiple upcoming events, PPL dives
Take February DAN Quiz is Cardiovascular Risk Factors for Diving http://www.alertdiver.com/Cardiovascular_Quiz
Up comming Dive Events:
Feb 25: Great Lakes Shipwreck Festival, Ann Arbor, MI.
March 16-18: Scuba Fest, Columbus, Ohio
March 17-18: Wolfs Marine Open House
April 13-14: Ghost Ships Festival, Milwaukee, WI.
April 27-28: GLWC Meet N Greet 2012 (Gilboa Quarry -Ohio)
August ??: MUD Club Steak Fry & Dive
September 7-9: Cheboygan Weekend
Divers Corner: Ascent Rates
Many practices exist when it comes to ascending after a dive. Some people follow newer guidelines of 30 feet per minute, and others are comfortable ascending at 60 feet per minute.
This ascent rate remained in place for many years even as dive tables continued to be refined. It was not until about 20 years ago that the U.S. Navy changed their recommended ascent rate to 30 feet per minute.
|Decompression Illness (DCI) is one of the greatest concerns associated with fast ascents. Air can enter the arterial circulation and result in an arterial gas embolism (AGE), which can cause a rapid onset of stroke like symptoms. Rapid ascents and resulting expanding gas in air spaces in the middle ears and sinuses may cause local injuries known as reverse blocks or reverse squeezes. If the ascent is too fast and the lungs cannot accommodate the expanding gas, pulmonary barotrauma can result.One way to control ascent rates is by practicing buoyancy control skills. Improperly maintained inflator or deflator mechanisms on BCDs and dry suits can cause more air to enter the system than intended and may not allow the diver to vent air quickly enough to stay in control. Proper weighting before the dive is essential and keep in mind that equipment changes such as switching from aluminum to steel tanks have an impact on proper weighting and buoyancy control during the dive and the ascent.The most common method of controlling speed during ascent is to simply vent excess air from the BCD or dry suit during ascent. Body positioning can also help by increasing drag in the water. Monitor your computer, and know what ascent rate it has been set to. If the rate is faster than you prefer, many computers allow you to change it.Use of a bottom slope, wall, ascent line or other visual or tactile reference is helpful. When practicing ascents in open water without a slope or ascent line, closely monitor the time and depth during your trip to the surface. Safety stops are a great way to slow and pause your ascent in the shallow depths where the greatest changes in pressure occur.Despite the lack of definitive consensus on what ascent rate divers should use, “slow” is a good way to go. The U.S. Navy and the National Oceanic and Atmospheric Administration (NOAA) use a rate of 30 feet per minute, and recreational dive-training-agency recommendations range from 30 to 60 feet per minute. Regardless of the ascent rate you choose, it is most important that your ascents be well under control.Extracted from © Alert Diver — Winter 2012|