This is an eclectic assortment of terms, most of which I heard in use aboard Greek ships loading grain in the port of Duluth-Superior in the late twentieth century. The catchword is the English term, the second word is phonetically transcribed Demotic (vernacular Greek), the third is the etymon of the Demotic term, and the last (if recorded) is the equivalent in Katharevousa (formal Greek, found mostly in documents on board).
Abbreviations: D. Demotic; Eng. English; Ital. Italian; K. Katharevousa; Turk. Turkish; Ven. Venetian; voc. vocative (form of direct address); * not directly attested
afterpeak áfterpik Eng. afterpeak
agent adzéntis Eng. agent K. práktoras
(to) anchor fundáro Ital. fondare K. angirovoló
ballast savúra Lat. saburra K. érma
(hatch-)batten vérga, bára Ital. verga, barra K. sanídha
berth berth Eng. berth K. thésis
blocks bastéka Ital. (Ven.) pasteca
(to) board barkáro Ital. barcare K. epivéno
boat várka Ital. barca K. várka
boatswain lostrómos Ital. nostromo K. lostrómos
boss kápos Ital. capo K. afthendikós
bulkhead bulmés Turk. bölme K. dhiáfragma
bunkers (fuel oil) bónker Eng. bunker K. petréleo (also D.)
captain kapetánios Ital. (Ven.) capitanio K. plíarxos
channel (radio, sea) kanáli Ital. canale K. porthmós
chief (engineer) (voc.) mástro (+ first name) Ital. maestro
chief (mate; and other deck officers) (voc.) kápta (+ first name) (abbrev. of kapetánios) K. gramatiké (chief mate)
crane kréni Eng. crane K. yeranós
davit kapóni Ital. (Ven.) capón K. epotís
deadweight dédweït Eng. deadweight
demurrage kondrastalíes Ital. (Ven.) contrastallía (see lay days)
derrick bíga Ital. biga K. fortotír, yeranós
diesel oil dízel Eng. diesel oil K. dízel
dock dók (ta doks) Eng. dock (the docks) K. dók, provlíta
double-bottom (tank for ballast or fuel) dabelbátem Eng. double-bottom K. dhipithmín
draft draft Eng. draft K. víthizma
(grain) elevator sílos Ital. silo
evaporator vaporéto Ital. vaporetto
even-keel ívenkíl Eng. even-keel K. isódhromos (also D.)
fender balóni Ital. ballone
fender stromátso Ital. stramazzo
finish (e.g., cargo) kompletáro Ital. (Ven.) completar ? K. telióno (also D.)
foreman fórman Eng. foreman K. ergodhigós
F.O.B. (free on board) fob Eng. f.o.b. K. eléfthero epí tu plíu
fresh water frésko neró Ital. fresco (+ Gk. neró) K. glikó neró
fuel oil fyúloil Eng. fuel oil K. petréleo (also D.)
fumigation fyumigésian Eng. fumigation K. mioktonía
gangway skála Ital. scala K. dhiabáthra
hatch bukapórta Ital. buccaporta
hatch-cover magrégor Eng. Macgregor (tradename)
haul (on a rope)! víra Ital. vira
hawser kávos Ital. cavo K. kálos
hawser gúmena Ital. gomena K. palamári
(on-/off-)hire an-/af-xáïr Eng. on-/off-hire
hogging (e.g., éxome) xagin Eng. (we're) hogging K. kirtótita
hold ambári Turk. ambar
inch íntsa Eng. inch
lay days stalíes Ital. stallía
maximum máksimum Eng. maximum K. méyiston
minimum mínimum Eng. minimum K. eláxisto
(heeling) moment (hílin) móment Eng. (heeling) moment K. ropí
number número Ital. numero K. arithmós
OK (okay) okéï Eng. okay K. endáksi
overtime óvertaïm Eng. overtime K. iperoría
painter (rope) barúma Ital. paroma
pilot pilótos Ital. piloto K. pilótos
pipe (grain-elevator spout) pípa Ital pipa K. xoní (xoáni)
poop-deck poúpi Ital. poppa
port (harbor) limáni Turk. liman K. limín
post (column) kolonáki Ital. colonna (+ Gk. -aki 'big')
pound (meas.) lí(v)ra Ital. lira
propellor propélla Eng. propellor
rails (along deck) rélia Ital. *reglia
rudder timóni Ital. timone K. timóni
runner (of derrick) róner Eng. runner
sagging (e.g., éxome) ságin Eng. (we're) sagging
scuttle (deck access) skátel Eng. scuttle K. rúmbos (also D.)
shift (e.g., éxome) shift Eng. (we'll be) shifting K. methórmisis
(to) shift mováro Eng. move (or Ital. muovere)
ship vapori Ital. vapore K. plío
slack (not full, of a hold or a tank) slak Eng. slack
slack (a rope)! láska / máïna Ital. lasca / maina
spring(-line) sprink Eng. spring
stevedore stivadhóros Ital. (Ven.) stivador K. forto-ekfortotís
stop! stop Eng. stop K. stamáta (also D.)
storm furtúna Ital. fortuna K. furtúna
stowage factor stówadz fáktor Eng. stowage factor
tank tank Eng. tank K. dheksamení
tight (of rope) férmos Ital. fermo K. tendoménos (also D.)
ton tónnos Late Lat. or Ital. tunna K. tónnos
topside tank tápsaïd tank Eng. topside tank
trimming (of bulk cargo) tríming Eng. trimming
tugboat rimúlko Old Ital. remurchio
ullage áladz Eng. ullage
winch víntsi Eng. winch K. varúlko
windlass pómpa Ital. pompa ? K. varúlko
wing-tank wink Eng. wing