PREPARETOTEACH
SEAMANSHIPSTATION-QUICKGUIDE
TraditionalSchoolship
InlandSeasEducationAssociation
SETUPSTATIONMATERIALS
! TalktotheCaptainabouthows/hewantstohandlethestation.
! Filla5-gallonbucketwithwater,andsetanempty5-gallonbucketnearit.Note:makesuretheseare
accessiblebutnotinthewayofthecrew.
! Makesurethebincontainsallofthematerialsyouneed.Alertleadinstructorifmaterialsaremissingor
broken.Thebinshouldbeondeck,butthematerialsarenotsetupuntiljustbeforethestationbegins.
! IftheLeadwantsyoutohelpwiththeTripdatasheet:Fillinthetopportionofthedatasheet.Includeyour
nameandtheLeadinstructor’sname.Reviewdatasheetdirections.
! Gatherindexcard,pencils,andlogbooksforthestudents.Smile!
PURPOSE
Atthisstationwefindouthowshipsfloatandmaneuverinthewater,andexploretheconnectionsbetween
boatingandshippingandGreatLakeshealth.
CONNECTIONTOLAKEHEALTH
ShippingontheGreatLakeshastraditionallybeen,andcontinuestobe,anaffordablewaytotransportraw
materialswithinthebasinandtoandfromtherestoftheworld.Inadditiontothemovementofgoods,exotic
speciesalsohitchrides,particularlyinballastwater,andcanbecomeinvasiveintheirnewlocations.
Recreationalboatingalsocontributestothemovementofaquaticspeciesandhasbeenresponsibleforthe
spreadofmanyinvasivespeciesfromonewaterwaytoanother.
TEACHINGTHESTATION
INTRODUCTION
(3min)
Setupkids Captainwill
explain
tosteer
Rotate
students
everyfew
minutes
commands
2ata
time
→ Repeatcommand
beforedoingit
SteeringandDirectionalControl
STEERING
(2min)
Howdoesacarsteer?
VS
Howdoesashipsteer?
BUOYANCY
(5min)
Rudder
Tail
Afish’s
tailisits
rudder!
Pusheswateronewayand
thesterntheotherway
Buoyancy:Willsteelfloat?
1. Whatisthe 2. Will
3. Willsteel
shipmade
steel
+abowl
of?
float?
float?
→ Steel8times
thedensityof
water
→ Tryit!
→ Tryit!
4. Whatisthe
difference?
→ Shape!
→ Abowl
displaces
MOREwater
BUOYANCY
continued
Tofloat:the
volumeofthe
fluiddisplaced
bytheobject
mustequalthe
weightofthe
object.
Gravity
45 tons
100 tons
100 tons
45 tons
Buoyancy
Understandingcheck:
Whatcouldwedo Whatcouldwedo
tothesteelplate tothebowlto
tomakeitfloat?
makeitsink?
→ Make it bigger:
Hammer it into
the shape of a
boat
→ Make it smaller:
Squish it into a
ball, or make a
flat plate
Stability:Floatingismorethanjustnotsinking!
STABILITY&BALLAST
(3min)
1. WilltheInlandBucket 2. Addweightedkeel
sinkorfloat?
→ Try
again!
→ Tryit!
→
→ Tryto
tipher
over!
"
4. Canwehaveakeel
andnoballast?
→ Tryit!
→
"
→ Ballastkeepsaboat
fromtippingover
→ InlandSeahas10tons
ofleadinthekeel
→ Manitouhas20tonsof
steelandconcrete
5. Whatdoesthekeeldo?
→ TrymovingtheInlandBucket
fromsidetosideandfrom
bowtostern.Whichiseasier?
BallastandLakeHealth:Connecttotheotherstations
1. Doesthisfeelheavy?
BALLASTANDLAKEHEALTH
(4min)
3. What’shappening?
Cargocan
actas
ballast
2. Modelshipment 3. Modelballastwater
acrossanocean
onthereturntrip
CARGO
WATER
→ Shipscanmove10,000tonsofwater+exoticspeciesfromonepartoftheworld
toanother
Haveyouseenanyinvasivespeciestoday?
→ Quaggamussels,roundgobies,andspinywaterfleasarrivedbyballastwater
→ Since2006ALLshipsmusttreatballastbeforeenteringtheGreatLakes
→ Recreationalboatscanalsotransportinvasives–washanddryyourboat!
CLEAN
UP
! Emptybuckets,stackthem,andtiethemtothelifelines.
! DryteachingtoolsandplaceeverythingneatlybackintotheSeamanshipbin.
! GiveyourcompleteddatasheettotheLeadinstructor(ifapplicable).