- royal marines
- royal merchant
- royal mortar
- royal naval reserve
- royals
- royal standard
- royal yacht
- royal yacht club
- royal yard
- roynes
- rubber
- rubble-work
- ruble
- rudder
- rudder braces
- rudder bands or braces
- rudder-case
- rudder-chains
- rudder-chalder
- rudder-chocks
- rudder-coat
- rudder-gudgeon
- rudder-head
- rudder-horn
- rudder-house
- rudder-irons
- rudder-pendants
- rudder-pintles
- rudder-rake
- rudder-stock
- rudder-tackles
- rudder-trunk
- ruffle
- rufflers
- rule of thumb
- rules of the sea
- rule-staff
- rumbelow
- rumbo
- rum-gagger
- rummage
- run
- run, clean
- run of the ice
- run, to lower by the
- run athwart a ship's course, to
- run away with her anchor
- run away with it!
- rundle
- run down a coast, to
- run down a vessel, to
- rune
- rungs
- runlet
- run-money
- runner-purchase
- runners
- runners of foreign goods
- running agreement
- running-blocks
- running bowline-knot
- running bowsprit
- running-down clause
- running-down the port
- running foul
- running goods
- running out, and running in, the lower deck guns
- running part of a tackle
- running the gantlet
- run out a warp, to
- rupee
- ruspone
- rut of the sea
- rut of the shore
- routier
- rutter
- ryde
- ryne
- s
- sabander
- sabatines
- sabre
- sabretache
- saccade
- sacolege
- saccoleva
- sack, to
- sacks of coals
- saddle hill
- saddles
- safe-conduct
- safeguard
- safety-keel
- safety-pin
- safety-valve
- sagg, to
- sagging to leeward
- sagitta
- sagittarii
- sagittarius