ated ▁from ▁the ▁t issues ▁during ▁as cent ▁from ▁a ▁d ive . ▁Also ▁rel ating ▁to ▁decom pression ▁( d iving ): ▁ ▁De com pression ▁algorithm , ▁or ▁decom pression ▁model . ▁One ▁of ▁several ▁algorithms ▁or ▁theoretical ▁models ▁used ▁to ▁compute ▁decom pression ▁tables , ▁or ▁the ▁decom pression ▁status ▁of ▁a ▁diver ▁in ▁real - time ▁using ▁a ▁d ive ▁computer , ▁and ▁for ▁d ive ▁planning . ▁These ▁include : ▁ ▁Bu hl mann ▁decom pression ▁algorithm ▁ ▁Red u ced ▁gradient ▁b ubble ▁model ▁ ▁Th al mann ▁algorithm ▁ ▁Th erm od ynamic ▁model ▁of ▁decom pression ▁ ▁V ary ing ▁P erme ability ▁Model ▁ ▁De com pression ▁bu oy , ▁a ▁bu oy ▁that ▁marks ▁a ▁diver ' s ▁position ▁when ▁doing ▁decom pression ▁stops ▁ ▁De com pression ▁chamber , ▁a ▁press ur izable ▁chamber ▁used ▁to ▁prevent ▁and / or ▁treat ▁decom pression ▁sick ness ▁ ▁De com pression ▁computer , ▁also ▁called ▁a ▁D ive ▁computer ▁or ▁decom pression ▁meter , ▁a ▁device ▁used ▁by ▁a ▁sc uba ▁diver ▁to ▁measure ▁the ▁time ▁and ▁depth ▁of ▁a ▁d ive ▁and ▁compute ▁a ▁safe ▁as cent ▁profile . ▁ ▁De com pression ▁practice , ▁Te chni ques ▁and ▁procedures ▁for ▁decom pression ▁used ▁by ▁under water ▁divers ▁ ▁De com pression ▁tables , ▁Print ed ▁tab ulated ▁decom pression ▁sched ules ▁used ▁to ▁plan ▁div ing ▁decom pression ▁ ▁De com pression ▁tra pe ze , ▁a ▁horizontal ▁bar ▁or ▁bars ▁susp