Mailing List Archive

Mailing List: techdiver

Message Display

From: "A.Appleyard" <A.APPLEYARD@fs*.mt*.um*.ac*.uk*>
To: techdiver@terra.net
Date: Mon, 27 Nov 1995 10:41:03 GMT
Subject: helmets & bandmasks? (was: Antarctic Diving)

  Robert_Robbins@co*.ed* (Subject: Re: Antarctic Diving) wrote:-

> Organization: COCC
  What is COCC?

> There are several advantages to using helmets and bandmasks over FFMs. ...
  (1) Re divers' helmets, is there a usual expression to distinguish between
(a) the old brass helmets, (b) modern sorts of air-filled helmet such as the
Kirby-Morgan, (c) underwater safety helmets that let water in and serve merely
to protect the head from cuts and bumps?
  (2) What sorts of type (b) diver's helmets are around, except Kirby-Morgan?
  (3) I have dived 3 times with type (a).
  (4) What is a bandmask? (I take it that `FFM' means `fullface mask').

> For real contaminated water diving, a full helmet ...
  Including for diving in alphabet soup, I suppose :-) (such as FFM, BCD, NSS,
IANTD, etc etc etc)

> ... that <connects directly to> a vulcanized dry suit is a must.
  Does this mean merely that the helmet's neck seal should overlap the
drysuit's neck seal when in use? Or what? (I once saw on the TV a Russian
front-entry spacesuit with the helmet permanently attached to the suit. The
helmet had an opening front plate.)

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]