Commanding Officer (CO):

The commanding officer is usually a Captain on a starship. The commanding officer gives orders to his/her crew during the mission. While off on deep space missions, problems may arise that need to be resolved for the mission to continue. It is for this reason that COs of vessels have been given limited powers regarding discipline. In addition to overseeing the day-to-day operation of a starship and to ensure it carries out its intended functions, a Commanding Officer is responsible for submitting a crew evaluation form and weekly ship logs to his/her SXO. SXO notifies vessel COs by sending out the blank form to be completed with all expediency by the CO.

Crew evaluations are not the end of the COs duties, however. COs are also responsible for settling disputes among crewmen, promoting and reprimanding officers as needed, and carrying out the orders of Starfleet Command and his/her starbase command, as well as interpreting and complying with Federation legal and diplomatic directives. As such, a Commanding Officer can be called upon to answer for his own actions and the actions of his crew. In addition, all COs maintain accurate records on his or her vessel which should include, but not necessarily be limited to, an up-to-date Ship's Log and Crew Bio File. COs may also chose to recommend their XOs for Commanding Officer positions. 
 

Executive Officer (XO):

The Executive Officer is the second-in-command of the ship. If something were to happen to the commanding officer, the executive officer would take command. Throughout history, Executive Officers have been thought of as the unofficial morale officers of Starfleet. They are responsible, to a certain extent for the welfare of the ship's crew. XOs need to keep the crew informed of all changes and updates as soon as possible. In addition, the XO acts as an advisor to the Captain giving advice and makes himself available for consultation when needed. While the Captain may be regarded by some as untouchable, the XOs are certainly thought of as the crew's link to him.

In addition to their duties to the CO and crew, XOs oversee transfers on and off the ship, by welcoming a new crew member and providing him/her with all the information and assistance needed to begin the integration process and by sending a transferring officer's information, including if possible his/her last evaluation, to the receiving CO. Executive Officers may also settle internal disputes amongst crewmen if the matter is not considered to demand the COs attention. Executive Officers are also called upon to lead away teams to a planet or base when necessary. 
 

Chief Operations Officer (COpsO): 

In most cases, the Chief of Operations is usually the third-in-command of the ship. The Chief of Operations is in charge of monitoring the status of the ship. While the Commanding Officer and Executive Officer oversee the daily functions of the crew, the Operations Officer is responsible for overseeing the functions of the ship itself. By monitoring the status of each ship system through his/her console on the bridge, the Ops officer can prioritize and allocate resources to various departments as needed. Most prioritization and allocation is done by the computer, but constant monitoring ensures that all situations are taken into account, especially during alert situations.

In addition, a ship's Ops officer is responsible for providing general status information to the computer and to individual departments to inform them of any changes that might affect their normal operations. During alerts, the Ops officer is also responsible for the allocation of power from the ship's warp reactor and fusion generators to permit the vessel to meet any demands made of it. 
 

Chief Security/Tactical Officer (CSO/CTO): 

The Chief of Security is in charge of the safety and well-being of the crew and passengers. The Tactical Officer controls the main defense systems aboard the ship. Sometimes the roles of Chief of Security and Tactical Officer are combined and given to one person. As the position title notes, Sec/Tac officers have the responsibility for coordinating all of the internal and external security for a vessel. This includes managing and leading security teams to provide a constant presence throughout the ship while minimizing visibility and any minor inconveniences to the crew in addition to the overseeing of a ship's offensive and defensive capabilities. Security teams may be directed from the tactical station via keyed instructions or in a meeting like setting by the Sec/Tac or ASec/Tac.

In addition, special transporting of dignitaries and ambassadorial staff shall be conducted by the Chief of Security and his/her staff as well as armory inventories, security team personnel assignments, and detailed counter-intelligence measures to prevent sabotage or terrorism aboard a starship. 
 

Chief Engineering Officer (CEO): 

Sometimes referred to as the Chief Engineer, the Chief Engineering Officer is in charge of maintaining the ship's engineering functions. The Chief Engineer is the department head to which all junior engineering officers report. As such, he or she is responsible for the overseeing of all systems of a vessel and making sure that they are kept in prime operating condition. In addition, the Chief Engineering Officer is also responsible for coordinating operations with other departments regarding their instruments and systems. For example, the Chief Engineering Officer shall coordinate all tactical systems with the Chief of Security and Tactical Officer. Other related duties, such as ship wide diagnostics, are also coordinated through the Chief Engineering Officer. CEOs may also be called to participate in away team missions at the discretion of the CO and XO. 
 

Chief Medical Officer (CMO): 

Much like the Chief Engineering Officer is responsible for maintaining the physical well-being of the ship, the Chief Medical Officer shall be responsible for maintaining the physical well-being of the crew. This is accomplished by scheduling regular exams of crewmen and by directing a staff of trained personnel in medical procedures. CMOs are responsible for conducting examinations of all crew members assigned to a vessel on a yearly basis. If necessary, the Chief Medical Officer can be called upon to coordinate all activities that relate to the physical health of the crew. In addition, as the senior most medical authority on a vessel, all field related missions will require consultation with the CMO. One of the unique powers given to the Chief Medical Officer is the ability to relieve a ship's CO of his or her duty if it is determined he or she is medically unfit. This power is not taken lightly, however, for if the CMO is proven to be out-of-line, he or she will be accountable for putting the crew in possible danger by removing the Commanding Officer. 
 

Chief Science Officer (CSciO): 

Throughout history, starship crews have encountered dangers in the depths of space. To give the Commanding Officer and the bridge crew the best chance to avoid violence by providing them with what may be information integral to their survival, all Starfleet starships have been outfitted with an array of sensor palettes and telescopes that bring kiloquads of information into the ship's computer banks every second. Experience has taught us, however, that the automated systems of a starship cannot always sort the important from the unimportant information. To solve that problem, Starfleet created the position of Chief Science Officer. The CSciO is responsible for sorting the data provided by the ship's sensors and routing it to the necessary ship departments. This position supplement's the position of Chief of Operations to allow the Ops officer to concentrate on the allocation of resources and monitoring ship status. In addition, the Chief Science Officer is the operating authority to a starship's science department. As such, all department operations are coordinated through the CSciO. 
 

Chief Navigations Officer (CNO): 

The CNO is responsible for the ship astrogation and flight control. Although these functions are primarily automated, their importance requires an officer to oversee them at all times for the safety of the ship and crew. The CNO receives his or her orders directly from the Commanding Officer or the officer presiding over the bridge watch. Areas of responsibility for the CNO include: navigational references and course plotting, supervision of automatic flight functions, manual flight operations, and position verification. During impulse flight, CNOs are responsible for making sure that all maneuvers stay within the boundaries of the ship's performance envelope. During warp flight, CNOs are required to monitor the ship's subspace field geometry and oversee automatic course corrections by the computer to account for minor variations in the density of interstellar medium. 
 

Counselor (Cns): 

Working under the Chief Medical Officer, the CNS is responsible for the psychological health of the crew. Like the CMO, the Counselor shall conduct annual examinations and direct a staff of trained psychologists to provide the crew with the ability to seek out counseling regarding all matters. In addition, all related matters and missions shall be coordinated with the consultation of the Counselor. The Counselor may also be called upon by the CO or XO to act as an advisor in volatile situations. As with the Chief Medical Officer, the Counselor has been given the power to relieve the CO of his or her duty if he or she is determined to by mentally unfit. If, however, the Counselor is proven to be incorrect in his or her determination, he or she may be held accountable for placing the ship at unnecessary risk due to the removal of the Commanding Officer.

Second Officer:

At times the XO must assume command of a Starship. When this happens the XO needs the help of another officer to assume his/her role as XO. The second officer is not a stand alone position, but a role given to the highest ranked and trusted officer aboard. When required the Second Officer will assume the role of XO, or if needed CO, and performs there duties as listed, for as long as required. Mainly assists the XO in any way possible to maintain the ship at top notch.

Chief of the Boat (Naval NCO):

Like the 2nd Officer title above, this is not a stand alone position. The senior most Chief Petty Officer (including Senior and Master Chiefs), regardless of rating, is designated by the Commanding Officer as the Chief of the Boat. In addition to his or her departmental responsibilities, the COB performs the following duties: serves as a liaison between the Commanding Officer (or Executive Officer) and the enlisted crewmen; ensures enlisted crews understand Command policies; advises the Commanding Officer and Executive Officer regarding enlisted morale, and evaluates the quality of noncommissioned officer leadership, management, and supervisory training. 

The COB works with the other department heads, Chiefs, supervisors, and crewmen to ensure discipline is equitably maintained, and the welfare, morale, and health needs of the enlisted personnel are met. The COB is qualified to temporarily act as Commanding or Executive Officer if so ordered. 

A Senior Chief Petty Officer may be called a Senior Chief of the Boat (SCOB). A Master Chief Petty Officer may be called a Master Chief of the Boat (MCOB).

Chief Diplomatic Officer:

The Diplomatic Officer of each vessel (if deemed necessary) must be familiar with a variety of areas: history, politics, economics, and military, and understand how they affect potential threats. A wide range of operations can occur in response to these areas and threats. These operations occur within three general states of being: peacetime competition, conflict and war. 

S/he must be equally flexible and demonstrate initiative, agility, depth, synchronization, and improvisation to provide responsive legal services to his/her CO as well a diplomatic advise on current status of an alien species both aligned and non aligned to the Federation. The Chief Diplomatic Officer must be versed in all Diplomatic information regarding the current status of the Federation and its aligned and non aligned neighbors.
 
 
Captain's Yeoman (NCO):

The Captain's Yeoman is for Petty Officers who wish to continue as administrators. It is technically a non-Mate position. Use of this position is completely at the discretion of the Commanding Officer. File work, and sensitive message transport are but two examples of the Yeoman's possible duties. 
 

CONN Officer:

Originally know as helm, or Flight Control Officer, CONN incorporates two job, navigation and flight control. A CONN Officer must always be present on the bridge of a starship, and every vessel has a number of CONN Officers to allow shift rotations. S/he plots courses, supervises the computers piloting, corrects any flight deviations and pilots the ship manually when needed. CONN Officers report to the Chief CONN Officer. 
 

Shuttle Pilot:

All small spacecraft aboard a starship (Shuttles, fighters etc.) are flown by Shuttle Pilots. This is often the proving ground for new CONN Officers until they earn a berth on a starship. Her/his direct superior is the CONN Officer. Shuttle Pilots are Bridge Staff, under the Command of the CONN Department. 
 

Quartermaster (NCO):

The Quartermaster, the senior most Master Chief Petty Officer of a ship, trains and supervises crewmen in Bridge operations, repairs, and protocols and sets the agenda for instruction in general ship operations for the Boatswain's Mate; maintains the ship's log, the ship's clock, watch and duty assignments for all Bridge personnel; may assume any Bridge (i.e. CONN) or Operations role (i.e. transporter) as required; and is qualified to act as Commanding or Executive Officer if so ordered. 

Quartermasters ensure that all officers and crew perform their duties consistent with Starfleet directives. The Quartermaster reports to the Executive Officer. 
 

Deputy of Security:

The Assistant Security Officer is called Deputy of Security. S/he assists the Chief of Security in the daily work; in issues regarding Security and any administrative matters. 

As, and if required, the Deputy must be able to take command of the Security department. 

Where Tactical is also part of the Security department, the deputy assumes the majority of its control freeing up the Chief of Security to maintain the Security department. 
 

Security Officer:

There are several Security Officers aboard of each vessel. They are assigned to their duties by the Chief of Security and his/her Deputy and mostly guard sensitive areas, protect people, patrol, and handle other threats to the Federation. 
 

Security Officer - Brig Officer:

The Brig Officer is a Security Officer who has chosen to specialise in a specific role. S/he guards the brig and its cells. But there are other duties associated with this post as well. S/he is responsible for any prisoner transport, and the questioning of prisoners. Often Brig Officers have a good knowledge of force field technology, and are experts in escaping such confinements. 
 

Master at-Arms (NCO):

The Master-at-Arms trains and supervises Security crewmen in departmental operations, repairs, and protocols; maintains duty assignments for all Security personnel; supervises weapons locker access and firearm deployment; and is qualified to temporarily act as Chief of Security if so ordered. The Master-at-Arms reports to the Chief of Security.
 

Deputy of Tactical:

The Assistant Tactical Officer is called Deputy of Tactical. S/he assists the Chief Tactical Officer in the daily work; in issues regarding tactical and any administrative matters. 

There is much more to tactical than simply overseeing the weapons console on the bridge. Tactical maintains the weapons systems aboard the ship/starbase, maintaining and reloading photons magazines. Tactical planning and current Intelligence analysis (if no Intelligence operatives are aboard) is also overseen by the tactical department. 

As and if required the Deputy must be able to take command of the Tactical department. 
 

Tactical Officer:

The Tactical Officers are the vessels gunmen. They assist the Chief Tactical Officer by running and maintaining the numerous weapons systems aboard the ship, and analysis and tactical planning of current missions. Very often Tactical Officers are also trained in ground combat and small unit tactics. 
 

Gunner's Mate (NCO):

The Gunner's Mate trains and supervises Tactical crewmen in tactical operations, repairs, and protocols; maintains duty assignments for all Tactical personnel; supervises ordnance inventory, preparation, and deployment; and is qualified to temporarily act as Chief Tactical Officer if so ordered. The Gunner's Mate reports to the Deputy of Tactical. 
 

Assistant Chief Engineer:

The Assistant Chief Engineer assists the Chief Engineer in the daily work; in issues regarding mechanical, administrative matters and co-ordinating repairs with other departments. 

If so required the Assistant Chief Engineer must be able to take over as Chief Engineer, and thus must be versed in current information regarding the ship. 
 

Engineer:

There are several non specialized Engineers aboard of each vessel, as needed. They are assigned to their duties by the Chief Engineer and his Assistant, performing a number of different tasks as required (i.e. general maintenance and repair). Generally Engineers as assigned to more specialized Engineering person to assist in there work is so requested by the specialized Engineer. 
 

Communications Engineer:

The Communications Officer is a specialized Engineer. Communication aboard a ship takes two basic forms, voice and data. Both are handled by the onboard computer system and dedicated hardware. The vastness and complexity of this system requires a dedicated team to maintain the system. The Communications Engineer is the Officer in charge of this team, which is made up from NCO personnel, assigned to the team by the Assistant and Chief Engineer. The Communications Engineer reports to the Assistant and Chief Engineer. 
 

Matter/Energy Engineer:

The Matter/Energy Engineer is a specialized Engineer. All aspect of matter energy transfers with the sole exception of the warp drive systems are handled by the Matter/Energy Engineer. Such areas involved are transporter and replicator systems. The Matter/Energy Engineer is the Officer in charge of a small team, which is made up from NCO personnel, assigned by the Assistant and Chief Engineer. The Matter/Energy Engineer reports to the Assistant and Chief Engineer. 
 

Warp Drive Engineer:

The Warp Drive Engineer is a specialized Engineer. The complexity of the Warp Drive system and impulse systems of any starship require eingineers to monitor and maintain the different settings required for each ship. No two vessels have exactly the same system aboard, and all settings require careful maintenance and checks to ensure peek performance. On smaller vessels this task may be performed by the Chief Engineer, but larger vessel have a dedicated Officer who's role to to ensure the Warp Drive system and impulse systems runs under any condition. A small team is often assigned to the Warp Drive Engineer, as needed, which is made up from NCO personnel, assigned by the Assistant and Chief Engineer. The Warp Drive Engineer reports to the Assistant and Chief Engineer. 
 

Structural and Environmental Engineer:

The Structural and Environmental Engineer is a specialized Engineer. From a small ship to a large one, all requires constant monitoring. The hull, bulkheads, walls, Jeffrey's tubes, turbolifts, structural integrity field, internal dampening field, and environmental systems are all monitored and maintained by this officer and his/her team. 

The team assigned to the Structural and Environmental Engineer, as needed, is made up from NCO personnel, assigned by the Assistant and Chief Engineer. The Structural and Environmental Engineer reports to the Assistant and Chief Engineer. 
 

Sensor Maintenance Engineer:

The Sensor Maintenance Engineer is a specialized Engineer. Dedicated to the maintenance and operation of the navigation deflector, guidance, helm, reaction control systems and all other sensor systems. 

A small team is assigned to the Sensor Maintenance Engineer, as needed, which is made up from NCO personnel, assigned by the Assistant and Chief Engineer. The Sensor Maintenance Engineer reports to the Assistant and Chief Engineer. 
 

Shuttlecraft Maintenance Engineer:

Shuttlecraft Maintenance is a specialized Engineer post. This Officer is assigned to the Shuttle Maintenance Deck (sometimes called the Flight Deck, if Fighter Pilot personnel are assigned), and is responsible for the service and repair of all small vessel assigned to the Starship. The flight deck must maintain a set number for craft at all times for evacuation purposes in case of emergency. 

A team is assigned to the Engineer in charge of Shuttlecraft Maintenance, as needed, which is made up from NCO personnel, assigned by the Assistant and Chief Engineer. The Engineer in charge of Shuttlecraft Maintenance reports to the Assistant and Chief Engineer. 

Computer Engineer:

The Computer Engineer is a specialized Engineer. The new generation of Computer systems are highly developed. This system needs much maintenance and the Computer Engineer was introduced to relieve the Science Officer, whose duty this was in the very early days. 

A small team is assigned to the Computer Engineer, as needed, which is made up from NCO personnel assigned by the Assistant and Chief Engineer. The Warp Drive Engineer reports to the Assistant and Chief Engineer. 
 

Engineer's Mate (NCO):

The Engineer's Mate trains and supervises Engineering crewmen in departmental operations, repairs, and protocols; maintains duty assignments for all Engineering personnel; and is qualified to temporarily act as Chief Engineer if so ordered. The Engineer's Mate reports to the Chief Engineer. 
 

Operations Officer:

The Chief Operations Officer cannot man the bridge at all times. Extra personnel are needed to relive and maintain ship operations, as needed. The Operations Officers are thus assistants to the Chief, fulfilling his/her duties when required, and assuming the Operations consoles if required at any time. 

The Operations Officer reports to the Chief Operations Officer. 
 

Flight Deck Operations Officer:

The Flight Deck Operations Officer oversees the operations that are undertaken in the shuttlebays and maintenance bay. All request for launch and landing clearance must pass to the Flight Deck Operations Officer, who in turn must pass on requests to the Operations Officer manning the bridge. 
 

Materials Officer:

Replicator usage can allow the fabrication of nearly any critical mission part, but large-scale replication is not considered energy efficient except in emergency situations. However, in such situations, power usage is strictly limited, so it is unwise to depend upon the availability of replicated spare parts. 

Thus a ship must maintain a significant stock of spare parts and raw replicator material in inventory at all times. The Materials Officer is the person responsible for the requesting of parts and materials from Starfleet and maintaining the stock and inventory of all spare parts. All requests for supplies are passed to the Materials Officer, who check and send the final request to the XO for final approval. A good Materials Officer is never caught short on supplies. 
 

Boatswain (NCO):

Each vessel has one Petty Officer (or Chief Petty Officer) who holds the position of Boatswain. The Boatswain (pronounced and also written "Bosun" or "Bos'n") trains and supervises personnel (including both the ship's company or base personnel as well as passengers or vessels) in general ship operations, repairs, and protocols; maintains duty assignments for all Operations personnel; sets the agenda for instruction in general ship operations; supervises auxiliary and utility service personnel and daily ship maintenance; coordinates all personnel cross trained in damage control operations and supervises damage control and emergency operations; may assume any Bridge or Operations role as required; and is qualified to temporarily act at Operations if so ordered. The Boatswain reports to the Chief Operations Officer. 
 

Assistant Chief Medical Officer:

A starship has numerous personnel aboard, and thus the Chief Medical Officer cannot be expect to do all the work required. The Assistant Chief Medical Officer assists the Chief in all areas, such as administration, and application of medical care. 
 

Medical Officer:

Medical Officers, as needed, undertake the majority of the work aboard the ship, examining the crew, and administering medical care under the instruction of the Chief Medical Officer and Assistant Chief. 

Medical Officers also run the other Medical areas not directly overseen by the Chief Medical Officer. 
 

Head Nurse:

The Head Nurse oversees all the Nurses currently aboard. Ensuring they are assigned to task and working as required in there area. Additionally the Head nurse performs the normal duties of the nurse, assisting the Duty Medical Officer in sickbay. 
 

Nurse:

Nurses, as needed, are trained in basic medical care, and are capable of dealing with less serious medical cases. In more serious matters the nurse assist the medical officer in the examination and administration of medical care, be this injecting required drugs, or simply assuring the injured party that they will be ok. 

The Nurses also maintain the medical ward(s), overseeing the patients and ensuring they are receiving medication and care as instructed by the Medical Officer.
 

EMH (Emergency Medical Hologram):

Two EMH programs are currently available, the longer term Mark II and the short term Mark I. Developed to act as the Chief Medical Officer, as and when required, this program can also be activated to provide additional assistance to the real Chief Medical Officer. The EMH is programmed with all current medical knowledge and has the ability to learn as required. 

Additionally the EMH can take on any other medical role as required by the ship. 
 

Physician's Mate (NCO):

The Physician's Mate trains and supervises Medical crewmen in departmental operations, repairs, and protocols; maintains duty assignments for all Medical personnel; leads triage and emergency medical efforts when necessary; co-ordinates all personnel cross trained in emergency medical operations; and is qualified to temporarily act as Chief Medical Officer (except where surgical procedures must be performed) if so ordered. The Physicians Mate reports to the Chief Medical Officer. 
 

Assistant Chief Science Officer:

The Assistant Chief Science Officer assists the Chief in all areas, such as administration, and analysis of scientific data. The Assistant often takes part in specific analysis of important data along with the Chief Science Officer, however spends most time overseeing projects and their section heads/officers. 
 

Science Officer:

There are several general Science Officers aboard each vessel, as needed. They are assigned to their duties by the Chief Science Officer and his Assistant. Assignments include work for the Specialized Section heads, as well as duties for work been carried out by the Chief and Assistant 

Answers to the Chief and Assistant Science Officer, or the section head they are assigned to. 
 

Science Officer - Stellar Cartographer:

Specialized Science Officer in charge of the Stellar Cartographer section. This role entails the study of all spatial phenomenon, and the implications of such phenomenon. Has close ties with the Physics and Astrometrics Section. 

Answers to the Chief and Assistant Science Officer. 
 

Science Officer - Biologist:

Specialized Science Officer in charge of the Biology Section. This role entails the study of biology, botany, zoology and many more Life Sciences. 

Answers to the Chief and Assistant Science Officer. 
 

Science Officer - Physicist:

Specialized Science Officer in charge of the Physics Section. This role entails the study of mathematical calculations and there implication and viability on the natural physics of the universe. It also involves the study of the natural physics of the universe and attempts to decipher them. Has close ties with the Stellar Cartographer and Astrometrics Section. 

Answers to the Chief and Assistant Science Officer. 
 

Science Officer - Language Specialist:

Specialized Science Officer in charge of the Linguistics section. This role involves the study of new and old languages and text in an attempt to better understand and interpret their meaning. 

Answers to the Chief and Assistant Science Officer. 
 

Science Officer - Astrometrics:

Specialized Science Officer in charge of the Astrometrics Section. This role entails the maintaining, correction and production of new stellar maps. Has close ties with the the Physics and Stellar Cartographer Sections. 

Answers to the Chief and Assistant Science Officer. 
 

Science Officer - Alien Anthropologist:

Specialized Science Officer in charge of the Alien Culture Section. This role involves the study of all newly discovered alien species and life forms, from the long dead to thriving. Their knowledge also involves current known alien species. Has close ties to the History Section. 

Answers to the Chief and Assistant Science Officer. 
 

Science Officer - Historian:

Specialized Science Officer in charge of the History section. This role entails the detailed study of civilizations past histories, and there implication and involvement in the future development of cultures. Has close ties to the Alien Culture Section. 

Answers to the Chief and Assistant Science Officer. 
 

Scientist's Mate (NCO):

The Scientist's Mate trains and supervises Science crewmen in departmental operations, repairs, and protocols; maintains duty assignments for all Science personnel; supervises all specimen preparation, cataloguing, and storage; and is qualified to temporarily act as Chief Science Officer if so ordered. 

The Scientist's Mate reports to the Chief Science Officer 
 

Galley Manager:

On almost every Starfleet vessel, there is some kind of recreational area. A place where all members of the crew can relax and enjoy, a place to forget the rigors of the day. Such places need some form of friendly service to help the crew relax. A warm smile who serves your food or drinks, to chat when somebody is alone or down.

The Galley Manger runs such establishments for the crew. 
 

Civilian: