- reduce a charge, to
- reduce a place, to
- reduction of celestial observations
- reef
- reef-band
- reef-cringles
- reef-earings
- reefed top-mast
- reefers
- reef-knot
- reef-line
- reef-pendant
- reef-points
- reef-tackles
- reef-tackle span
- reels
- reeming
- reeming-beetle
- reeming-iron
- re-entering angle
- reeve, to
- reeving
- refitting
- reflecting circle
- reflection, angle of
- reflux
- reformades
- refracting telescope
- refraction
- refusal of a pile
- regal fishes
- regarders
- regatta
- regiment
- regimental orders
- regimentals
- regimental staff-officers
- region
- register
- register anew
- register of vice-admiralty court
- register ship
- registry of seamen
- regni populi
- regulator
- regulus
- reigning winds
- rein
- reinforce, to
- reinforce
- re-insurance
- reis
- relief
- relieve, to
- relieving tackles
- reume
- rema
- remain
- remark-book
- remberge
- remblai
- remora
- removal from the list
- rendering
- rendezvous
- repeating fire-arm
- repeat signals, to
- replenish, to
- report of guard
- report of survey
- report one's self, to
- representation
- reprimand
- reprisal
- reprise
- requisition
- rescue
- reserve
- re-ship
- resident
- resisting medium
- resolve, to
- resource
- respondentia
- responsibility
- rest
- ret, to
- retinue
- retire
- retired list
- retired pay
- retractus aquæ
- retreat
- retrenchment
- retrogradation
- retrograde motion
- return
- return a salute, to
- returns
- reveille