Ocean Diver - Theory Lessons

OT1 - Ocean Diver Training

Lesson Objectives

An introduction to trainee divers about to undertake Ocean Diver Training in a BSAC Branch or Centre

Achievement Targets

At the end of this lesson students should:
  • Have been introduced to the structure of your Branch/Centre and the BSAC
  • Understand the benefits of BSAC Membership
  • Understand the benefits of training and diving with the Branch and cost implications
  • Understand the Aims and Course contents of Ocean Diver
  • Understand the ongoing progression after qualifying as an Ocean Diver

Following items will be useful as additional Visual Aids

  • The Diving Manual
  • Student Workbook
  • Qualification Record Book
  • Copy of Dive Magazine

OT2 - Diving Equipment and Diving Signals

Lesson Objectives

An introduction to the diving environment and the specialist equipment divers need. The lesson concludes with signals.

Achievement Targets

At the end of this lesson students should:
  • Have a basic understanding of air, breathing gas mixtures and water pressure and the effects on the diver in the underwater environment
  • Understand the purpose and function of Basic Kit
  • Understand the purpose and function of SCUBA Equipment
  • Understand the need for Diving Signals

Following items will be useful as additional Visual Aids

  • Mask, Fins & Snorkel
  • SCUBA Equipment - Cylinder, Regulator + Octopus, BC

OT3 - The Body & Effects of Diving

Lesson Objectives

Having introduced in the previous presentation how air and water pressure affects divers in relation to Basic and Scuba Equipment, this session looks in more detail at the Human Body and the effects of diving on it. Understanding the body and some of the effects of diving provide a background to future lessons on diving disorders, prevention and treatment.

Achievement Targets

At the end of this lesson students should:
  • Have a basic understanding of the Body Mechanisms, Metabolism, Respiration and Circulation
  • Understand the effects of diving on the ear and sinuses
  • Understand that thermal protection prevents heat loss
  • Have a basic understanding of buoyancy and how diving equipment can alter a diver's buoyancy
  • Understand the 0need for general awareness and fitness before diving

Following items will be useful as additional Visual Aids

Different types of diving suits. A weight belt

OT4 - Planning to go Diving

Lesson Objectives

Before getting into the water on any dive there must be a plan to ensure the management of nitrogen in the body and that the diver has sufficient air for the planned dive.

Achievement Targets

At the end of this lesson students should:
  • Have a basic understanding of the effects of nitrogen on the body when diving
  • Understand that management of nitrogen is crucial to minimise the risk of decompression illness (DCI)
  • Understand the BSAC Decompression Tables terminology
  • Understand how to use the BSAC tables to plan one dive and then two no-stop dives
  • Understand the basic differences between tables and computers
  • Understand that whether using tables or computers they are not infallible
  • Understand the principle of the Rule of Thirds to plan and monitor breathing gas on dives

Following items will be needed

Copies of the BSAC 88 Tables to allow students to work with the Instructor on dive planning exercises. A dive computer to show as an example.

Following items will be useful as additional Visual Aids

A fizzy drink can or bottle to demonstrate fast release of gas bubbles

OT5 - Going Diving

Lesson Objectives

Following on from the last lesson, this lesson offers practical advice to students on going diving. They will recognise many elements from early practical sessions and the lesson is giving guidance on what to expect on dives

Achievement Targets

At the end of this lesson students should:
  • Understand that diving is an adventurous sport and that risks need to be assessed to make it as safe as possible
  • Understand the importance of diving as a buddy pair
  • Understand that diving is controlled by a Dive Manager
  • Understand the importance of the dive plan, brief and buddy check
  • Understand what to expect and consider during a dive
  • Understand how to use underwater pilotage
  • Understand vision underwater

Following items will be useful as additional Visual Aids

A Dive Flag, a diving torch

OT6 - What Happens If...?

Lesson Objectives

Diver training is "preventative" training, not only in teaching diving skills but anticipating how to recognise and resolve problems should they arise. As students are at an early level of training, some of the areas considered are for their awareness rather than in-depth knowledge and will be built on through later diver training grades

Achievement Targets

At the end of this lesson students should:
  • Understand that anticipating problems is part of training and planning
  • Understand the cause, effects and resolution of potential problems relating to:
    • DCI, effects of nitrogen and lung damage
    • Nitrogen narcosis
    • Oxygen toxicity
    • Air
  • Understand that Oxygen Administration is a First Aid tool for divers and recompression treatment should be sought following any abnormalities present after a dive
  • Understand the importance of resolving underwater problems early
  • How to effect a rescue

Following items will be useful as additional Visual Aids

Oxygen Administration kit

OT7 - Enjoying Your Diving

Lesson Objectives

When students have completed their Ocean Diver training they will begin to extend their diving either with a BSAC Branch, BSAC Centre or on other organised dive trips. Students will begin to experience a variety of different dive sites and different diving conditions. This lesson is to remind them that what they have already learned and experienced through their training can be carried forward to new diving experiences. As qualified divers, they need to incorporate some of the advice within their dive planning and actual diving.

Achievement Targets

At the end of this lesson students should:
  • Understand the different types of diving they may experience in the future
  • Understand diving conditions and different diving platforms
  • Understand the characteristics of reef, wreck and night diving
  • Understand that reef and wreck diving carries a responsibility in protecting these sites for future divers
  • Understand the considerations when snorkel diving and snorkelling buddy techniques
  • Understand particular considerations for holiday diving which may take place outside a branch or centre
  • Understand how to progress their diving and training experience once qualified as Ocean Divers

Following items will be useful as additional Visual Aids

A diving knife or net cutter, a diving torch, a light stick or strobe light