Sub-normal said:
A lot will depend on what trade you are, not all trades are represented on subs. There is also a submarine medical to pass. DAOD 5003-7 is the reference.
"Eligible CF members who wish to serve in submarines may make this known to their CO at any time.
Career managers compile lists of CF members who wish to serve in submarines and process an application when the eligibility requirements are met by a CF member. Should there be insufficient CF members willing to serve in submarines to fill the vacancies, DGMC selects other eligible CF members in accordance with instructions issued by or on behalf of the Chief of the Defence Staff (CDS)."
I'll assume the poster isn't in the RCN or even the CAF...so to start here is the basic info on what a DAOD is.
Department of National Defence and Canadian Armed Forces corporate administrative direction is set out in the comprehensive collection of Defence Administrative Orders and Directives (DAOD) that are issued by or under the authority of the Deputy Minister and the Chief of the Defence Staff
http://www.forces.gc.ca/en/about-policies-standards-defence-admin-orders-directives-5000/5003-7.page (this DAOD is old, Date of Issue: 2002-12-06. Some of the trade names may have/did change).
2.1 There is an ongoing requirement for CAF members to serve in submarines. The submarine service offers a challenge to CAF members who wish to experience a lifestyle which is adventurous, demanding and responsible. However, living and working conditions on board a submarine are less comfortable than those on board surface ships, and each member of a submarine crew is required to perform many out-of-occupation duties associated with operational requirements in addition to normal military occupation duties.
Eligible Occupations
3.1 CAF members of the following military occupations are eligible for submarine duty:
a.Maritime Surface and Sub-Surface (MARS 71B, 71C, 71D);
b.Maritime Engineer (Marine Systems) (MARE MS 44B);
c.Maritime Engineer (Combat Systems) (MARE CS 44C);
d.Naval Weapons Technician (NW Tech 065);
e.Naval Combat Information Operator (NCI Op 275);
f.Naval Communicator (Nav Comm 277);
g.Tactical Acoustic Sensor Operator (TAS Op 278);
h.Naval Electronics Technician (Acoustic) (NE Tech (A) 283);
i.Naval Electronics Technician (Communications) (NE Tech (C) 284);
j.Naval Electronics Technician (Tactical) (NE Tech (T) 285);
k.Naval Electronics Technician (Manager) (NE Tech (M) 286), only with prior submarine experience as NE Tech (A) 283, NE Tech (C) 284 or NE Tech (T) 285;
l.Maritime Engineering Mechanic (Mar Eng Mech 312);
m.Maritime Engineering Technician (Mar Eng Tech 313);
n.Maritime Engineering Artificer (Mar Eng Art 314);
o.Electrical Technician (E Tech 331);
p.Marine Electrician (Mar El 332);
q.Medical Assistant (Med A 711);
r.Cook 861; and
s.Steward (Stwd 862).
Eligibility Requirements
4.1 To be accepted for submarine duty, a CAF member must:
a.have a minimum English language profile of BAB;
b.be medically and dentally fit to the standard set out in A-MD-154-000/FP-000, Medical Standards for the Canadian Forces;
c.except for those on a basic engagement, have at least three years remaining in their current term of service at the time of commencing submarine duty;
d.pass a pressure tolerance test; and
e.have the applicable qualification as set out below: [see website for table]
Qualifications
4.5 Non-commissioned members (NCMs) not previously qualified are required to attend the naval environment training program at the Canadian Forces Naval Operations School at Halifax, prior to commencing basic submarine training.
4.6 The three-month basic submarine course is loaded by Director Maritime Training and Education (DMTE) and conducted at the Canadian Forces Naval Operations School Halifax for both officers and NCMs. On completion of basic training, CAF members follow a training profile designed for each particular military occupation. Total training time, including basic and military occupation specific training, may be five to fourteen months in duration. Candidates are attach-posted or posted depending on the military occupation, duration of training and other factors determined by the career manager. Upon successful completion of training, the prospective submariner will join a submarine for on-job training.
4.7 A CAF member trained and qualified by a foreign navy may submit a request to their CO to have the qualification considered equivalent to CAF standards. The CO shall send the request through the chain of command to D Mar Pers.
4.8 A CAF member who has successfully completed the on-board qualification in submarines is:
a.awarded the submarine badge; and
b.entitled to wear the badge for the remainder of the CAF career.