Will tomorrow’s superyacht

Be a swath?

Superyacht - - Design -

as al­rea­dy men­tio­ned. In the cour­se of the pa­st few years se­ve­ral pro­ject de­si­gns ha­ve not on­ly been dra­wn up but a few ha­ve al­so been built and boa­st con­si­de­ra­ble spa­ce and extra com­fort, not on­ly at sea but al­so when ly­ing to an an­chor in a bay. One of the­se yachts is “Sil­ver Cloud”. Still, a SWATH con­fi­gu­ra­tion has been lit­tle ex­ploi­ted so far. It al­lo­ws you to ex­plo­re new sha­pes and so­lu­tions, in prac­ti­cal, func­tio­nal terms as well as in sty­le: we’re loo­king at lea­st as far as yachts are con­cer­ned, at so­me­thing wi­th plen­ty of po­ten­tial but whi­ch has not been ex­plo­red and ex­ploi­ted as mu­ch as it seems to de­ser­ve. We’ll be viewing se­ve­ral pro­ject de­si­gns, con­cep­ts and other avai­la­ble ma­te­rial in the next few pa­ges.

SWATH 75 by Fin­can­tie­ri Let’s be­gin wi­th Fin­can­tie­ri, whi­ch is one of the mo­st long­stan­ding and big­ge­st shi­pyards in the world. It has built the mo­st im­po­sing and lu­xu­rious li­ners and crui­se ships, ma­ny car­go ships fer­ries as well sub­ma­ri­nes and other mi­li­ta­ry ves­sels and la­st but not lea­st so­me of the world’s lar­ge­st me­ga yachts. It was the­re­fo­re no real sur­pri­se when Fin­can­tie­ri ca­me up wi­th pro­ject de­si­gn work for a 75 me­tre ya­cht wi­th a SWATH plat­form. The ya­cht has been na­med SWATH 75 so as to bet­ter un­der­sco­re the choi­ce the shipyard ma­de for its ge­nui­ne special cha­rac­te­ri­stics spor­ting great ad­van­ta­ges in terms of hy­dro­dy­na­mic ef­fi­cien­cy and sea kee­ping qua­li­ties. But that is not all sin­ce the­re are a num­ber of di­sad­van­ta­ges in re­la­tion­ship to con­ven­tio­nal hulls. Among other things as we’ve al­rea­dy seen, a SWATH con­fi­gu­ra­tion has been lit­tle de­ployed so far and mo­re so on de­ci­ded­ly smal­ler si­zes, around 40 me­tres at the mo­st. Fin­can­tie­ri op­ted for so­me­thing mu­ch lar­ger in an­swer to the pro­blems at­tri­bu­ted to SWATHS spe­cial­ly when dea­ling wi­th the si­ze in que­stion: pro­blems in­he­rent to draught whi­ch means that en­te­ring or exi­ting ma­ny ports be­co­mes dif­fi­cult. At the sa­me ti­me the de­si­gn team tried to re-in­ter­pret the ve­ry con­cept of what a ya­cht is to­day, so­me­thing con­cei­ved to be mo­re than a floa­ting vil­la whi­ch tra­vels over wa­ter loo­king for the mo­st beau­ti­ful and un­spoilt pla­ces, whe­re it will be ma­de wel­co­me wi­thout any re­stric­tion thanks to hy­dro­gen pro­pul­sion re­sul­ting from the ex­pe­rien­ce ac­qui­red wi­th sub­ma­ri­nes. A tru­ly com­for­ta­ble all wea­ther vil­la whi­ch can ea­si­ly an­chor off in a bay con­si­de­ring the re­mar­ka­ble all round sta­bi­li­ty this con­fi­gu­ra­tion of­fers. Ano­ther pro­blem whi­ch is ty­pi­cal of SWATH yachts spe­cial­ly

when on the lar­ge si­de has to do wi­th get­ting to the sur­roun­ding wa­ters from the ya­cht. Fin­can­tie­ri’s de­si­gn team pou­red over this aspect brin­ging in mu­ch of the ex­pe­rien­ced gai­ned in de­si­gning and then buil­ding lar­ge ships, and re­sear­ch ves­sels wi­th con­si­de­ra­ble plat­forms, as well as lar­ge mi­li­ta­ry ships.the­re­fo­re al­so rai­sing plat­forms, tail-ga­tes, hold doors, te­le­sco­pic boar­ding/ba­thing lad­ders are so­me of the so­lu­tions ma­de avai­la­ble by Fin­can­tie­ri to deal wi­th the pro­blem. Pe­rhaps the­se so­lu­tions are ea­sy enou­gh to draw but they al­so re­qui­re com­plex en­gi­nee­ring.

SWATH explorer ya­cht by Abe­king & Ra­smus­sen Wi­th an LOA of 63 me­tres and a beam of 24.5 me­tres this con­cept de­si­gn is de­di­ca­ted to an explorer ya­cht. Ray­mond Lang­ton drew it up for the pre­sti­gious Abe­king & Ra­smus­sen shi­pyards from Ger­ma­ny. The si­lhouet­te as all the ex­te­riors, look a lot li­ke mo­re con­ven­tio­nal su­pe­rya­ch­ts. But on­ce you ta­ke a look be­low the wa­ter­li­ne you can ea­si­ly di­scern the dif­fe­ren­ce by the sha­ping of the hulls.this ya­cht sports a SWATH plat­form, and mo­re espe­cial­ly a SWATH fea­tu­ring split stru­ts one for the bow and one in the stern so as to re­du­ce the wet­ted area fur­ther the­re­by re­du­cing drag mo­re, and en­han­cing sta­bi­li­ty in a head sea whi­ch trans­la­tes in ac­crued com­fort. The lay­out ob­tai­ned by this con­fi­gu­ra­tion is re­mar­ka­ble, in terms of extra spa­ce when com­pa­red to con­ven­tio­nal hulls. Ray­mond Lang­ton ex­ploi­ted all of the four decks at be­st, whi­ch com­pri­se spa­cious lu­xu­ry ca­bins, com­for­ta­ble loun­ges,

technical areas, plen­ty of ex­ter­nal spa­ce and a he­li­cop­ter deck. SWATH by Da­ni­sh Yachts This mo­del sports as ma­ny as th­ree stru­ts per sub­ma­ri­ne sha­ped ta­pe­ring floa­ts be­low the wa­ter­li­ne: this is how fa­mous de­si­gner Espen Øi­no ima­gi­nes his ya­cht on a SWATH plat­form. The con­cept de­si­gn work pro­du­ced for Da­ni­sh Yachts shipyard, com­pri­ses bal­la­st wa­ter tanks whi­ch can re­du­ce or in­crea­se the ya­cht’s draught ac­cor­din­gly. When the bal­la­st wa­ter tanks are full and the sub­ma­ri­ne ty­pe floa­ts are dee­ply im­mer­sed you ha­ve a stan­dard nor­mal SWATH good for sai­ling ef­fi­cien­tly, whi­le on­ce the wa­ter has been pum­ped out of the tanks the ya­cht ri­ses hi­gh abo­ve the wa­ter be­co­ming an off­sho­re rig li­ke plat­form whe­re even the hi­ghe­st wa­ves will pass be­low it bet­ween the stru­ts wi­thout im­pac­ting again­st the ho­ri­zon­tal pla­ne at all whi­ch mi­ni­mi­ses ver­ti­cal mo­tion. In prac­ti­cal terms SWATH dou­bles from being a ve­ry com­for­ta­ble ya­cht at sea whi­le crui­sing and an ef­fi­cient island any­whe­re you choo­se, an island whi­ch can pro­tect you from hu­ge­ly im­pres­si­ve and im­pe­tuous seas.

SWATH CON­CEPT by Ken Frei­vo­kh De­si­gn Ken Frei­vo­kh’s De­si­gn stu­dio de­li­ve­red this 41 me­tre con­cept whi­ch re­calls the technical so­lu­tions and the sa­me geo­me­try seen in off­sho­re rigs so as to of­fer an ex­tre­me­ly ef­fi­cient, sound, and com­for­ta­ble ya­cht spe­cial­ly well sui­ted to fa­cing up to ve­ry ad­ver­se sea con­di­tions.the ideas be­hind this pro­ject we­re to co­me up wi­th an es­sen­tial­ly sta­ble com­for­ta­ble plat­form from whi­ch to lo­wer and laun­ch ten­ders and all sorts of wa­ter toys. Su­re­ly enou­gh at fir­st sight it looks a lot mo­re li­ke a spa­ce ship than a ya­cht.wi­thout doubt we­re this to be su­b­jec­ted to a fea­si­bi­li­ty stu­dy to rea­li­sti­cal­ly as­sess whe­ther or not it could be a doa­ble pro­ject, then se­ve­ral func­tio­nal and ar­chi­tec­tu­ral aspec­ts would need to be mo­di­fied as well as so­me ex­ces­ses. WHY NOT by Superyacht De­si­gn team Se­ve­ral years ago, in 2010 wi­th se­ve­ral other technical contributors to Superyacht In­ter­na­tio­nal, we ca­me up wi­th a new “vi­sion” for a superyacht: a ship island, in other words a ship pos­ses­sing spa­ce enou­gh to co­py a rea­li­stic vil­la by the sea, or bet­ter in the sea whi­ch can al­so mo­ve and chan­ge pla­ce.this idea was trig­ge­red off by a heart­felt de­ba­te over Wal­ly Yachts wi­th their “Why”. It was a pro­po­sal whi­ch went well beyond the con­cept of a floa­ting hou­se­boat or of a floa­ting re­sort.we’re tal­king about tho­se ho­tels abo­ve and be­low the wa­ter whi­ch ha­ve fil­led sco­res of ma­ga­zi­nes’ pa­ges and the dreams of tho­se see­king ex­clu­si­ve ho­li­days, but whi­ch are in fact me­re sta­tic con­struc­tions whi­ch can­not mo­ve. Hy­brid things whi­ch of cour­se can de­li­ver a va­rie­ty of plea­sant fee­lings and sen­sa­tions thanks to of­ten fa­sci­na­ting and na­tu­ral bac­k­drops in whi­ch they are pla­ced but on the con­tra­ry, they are a con­tra­dic­tion wi­th the pri­me rea­son for whi­ch any ty­pe of floa­ting ob­ject is built, that is to sail or at lea­st wi­th the op­tion of being able to do so. And sur­fing this emo­tio­nal wa­ve we na­med our con­cept “Why Not”. Fir­st of all we had to de­ci­de on whi­ch could be the be­st hull, the be­st sui­ted one wi­th whi­ch to build our dream of a ship-island. If for “Why” a special mo­no hull na­med “Ram­form hull” was de­vi­sed - whi­ch is the sa­me as the in­ven­tor’s na­me - and sports mo­re or less the sa­me di­men­sions as a ca­ta­ma­ran does and is de­ployed by special ca­ble lay­ing ships, we cho­se a SWATH con­fi­gu­ra­tion for our “Why Not” for the fol­lo­wing rea­so­ning: The am­ple plat­form abo­ve the wa­ter gua­ran­tees a sur­fa­ce area wi­th no equal on whi­ch to build the “vil­la”; the low po­we­red en­gi­nes re­qui­red to sail, to­ge­ther wi­th a re­la­ti­ve­ly slow speed of about 12 kno­ts all out means the ves­sel can be po­we­red elec­tri­cal­ly wi­th ze­ro ex­hau­st emis­sions, at lea­st for so­me of the ti­me. Re­mar­ka­ble ove­rall sta­bi­li­ty whi­ch does not jeo­par­di­ze com­fort in any way, as of­ten hap­pens wi­th other mul­ti hulls su­ch as ca­ta­ma­rans whi­ch due to their ex­ces­si­ve sta­bi­li­ty be­co­me “stiff ” ( this ex­pres­sion is of­ten used to de­scri­be a ves­sel whi­ch is hard to steer as when vee­ring off cour­se for wha­te­ver rea­son it jol­ts back on cour­se wi­th sud­den ac­ce­le­ra­tion whi­ch grea­tly re­du­ces li­va­bi­li­ty); Great sea kee­ping qua­li­ties, bo­th when crui­sing or when ly­ing to an

would ha­ve on the en­vi­ron­ment: the adop­tion of hy­brid pro­pul­sion in­te­gra­ted wi­th re­newa­ble ener­gy su­ch as wind va­nes and so­lar pa­nels so as to pol­lu­te as lit­tle as pos­si­ble. If on one hand wi­th this ob­jec­ti­ve in mind means sa­cri­fi­cing de­si­gn on the other it means ad­dres­sing in­te­re­sting op­por­tu­ni­ties so as to gi­ve the ves­sel ad­ded ae­sthe­ti­cal cha­rac­ter. For exam­ple for “Why Not” we en­vi­sa­ged a sort of twin laye­red shea­thing or dou­ble ex­ter­nal skin whi­ch would li­mit the use of A/C sup­ply by de­ploy­ing a con­stant ai­ring of in­te­rior areas whi­le ex­ter­nal­ly ma­king full use of the se­cond layer the­re would be less ef­fect from the sun’s rays on the mo­re ex­po­sed si­de the­re­by re­du­cing heat in­si­de and pol­lu­ting less.

Floa­ting pa­ra­di­se In a nu­tshell we’re fi­na­li­sing this brief ex­cur­sion on how a SWATH can be used be­st to en­vi­sa­ge a Floa­ting Pa­ra­di­se of a superyacht.this is a real­ly in­te­re­sting and well pon­de­red in­no­va­ti­ve pro­po­sal whi­ch sum­ma­ri­zes and re enac­ts the con­cept of a ship- island ini­tia­ted wi­th “Why Not” fo­cu­sing it on­to a spe­ci­fic tar­get: “ship-island-re­sort”. Pro­ject de­si­gn work has been car­ried out and pre­sen­ted by a pro­mi­sing young de­si­gner Ro­ber­ta Vul­tag­gio in the cour­se of her the­sis fi­na­li­sing e de­gree cour­se in Na­val & Ya­cht De­si­gn. Floa­ting Pa­ra­di­se is in fact a lu­xu­ry re­sort in­stal­led on­to a 40 me­tre SWATH, whi­ch from a technical view point is ad­van­ced ina­smu­ch as it boasts th­ree sub­ma­ri­ne sha­ped floa­ts (SMALL WA­TER AREA TRI­PLE HULL) and not the tra­di­tio­nal two. A de­ci­ded­ly ra­re so­lu­tion, if not the on­ly one so far in the glo­bal na­val sec­tor whi­ch ne­ver­the­less lea­ves so­me doubt as to its ca­pa­ci­ty to crui­se. But the­re’s ti­me enou­gh in whi­ch to weed out in­he­rent pro­blems and technical dif­fi­cul­ties. For the ti­me being let’s con­cen­tra­te on the idea and en­suing con­cept whi­ch quo­ting the de­si­gners’ own words: “was to an­chor FLOA­TING PA­RA­DI­SE next to so­me of the splen­did Ca­rib­bean vil­la­ge re­sorts so as to of­fer vi­si­ting guests an extra pos­si­bi­li­ty: the op­por­tu­ni­ty of en­joy­ing one por­tion of their ho­li­day at the re­sort and the other on an iti­ne­rant ho­li­day vil­la­ge on the wa­ter hop­ping from one islet to ano­ther wi­thout lo­sing sight of the splen­did hea­ven­ly scenario whi­ch su­ch re­sorts of­fer..... whi­le en­joy­ing a sen­se of tran­quil­li­ty whi­ch sai­ling in calm wa­ters con­veys”. This ou­tli­nes a pre set use for whi­ch the main deck has been ou­tli­ned na­me­ly to ho­st ju­st six bun­ga­low sha­ped ca­bins wi­th in­de­pen­dent ac­cess di­rec­tly from the brid­ge at amid­ships, as well as se­ve­ral re­crea­tio­nal areas wi­th a va­rie­ty of op­tions.the up­per deck hosts a small well­ness cen­tre wi­th a pair of Ja­cuz­zi and a well equip­ped gym. Ad­di­tio­nal­ly the SWATH can ta­ke in or di­spo­se of wa­ter bal­la­st ac­cor­din­gly, si­mi­lar­ly to the one you ha­ve al­rea­dy seen pro­po­sed by Espen Øi­no’s pro­ject for a SWATH whi­ch was de­ve­lo­ped by Da­ni­sh Yachts shipyard. Al­beit by va­ry­ing the quan­ti­ty of wa­ter in bal­la­st tanks on it is al­so pos­si­ble to flood va­rious ad­di­tio­nal com­part­men­ts whi­ch ma­ke the SWATH floa­ts de­scend fur­ther to the ex­tent that bo­th of the Ja­cuz­zi si­tua­ted at the stern prac­ti­cal­ly rea­ch do­wn to sea wa­ter le­vel crea­ting the uni­que il­lu­sion of a en­joy­ing a hy­dro-mas­sa­ge sit­ting in the sea. In other words as be­st de­scri­bed by the young de­si­gner in per­son: “Floa­ting Pa­ra­di­se is a SWATH ca­pa­ble of blen­ding per­fec­tly well in any one of the splen­did Ca­rib­bean sce­na­rios whi­le of­fe­ring guests uni­que ex­pe­rien­ces and dream ho­li­days”.

Con­clu­sions Ba­sed on what we’ve seen the de­ploy­ment of a special yet “stran­ge” ob­ject in the li­kes of a SWATH ne­ces­sa­ri­ly ge­ne­ra­tes equal­ly special and “stran­ge” yachts. In fact we­re we to use a SWATH plat­form by whi­ch to ima­gi­ne a ya­cht, we would ha­ve to re think the func­tion the ya­cht is de­sti­ned to ful­fil ac­cor­ding to its li­mi­ts as well as its ad­van­ta­ges and new op­por­tu­ni­ties this con­fi­gu­ra­tion brings wi­th its adop­tion. We find our­sel­ves in the mid­st of a de­si­gn sec­tor whi­ch cer­tain­ly of­fers grand spa­ces in whi­ch to mo­ve, a field in whi­ch se­ve­ral fa­med de­si­gners and so­me im­por­tant shi­pyards ha­ve al­rea­dy per­cei­ved con­cre­te de­ve­lo­p­ment op­por­tu­ni­ties. Let’s then rea­dy our­sel­ves to see and exa­mi­ne ma­ny other pro­po­sals, whi­ch stand to be­co­me stran­ger and stran­ger and mo­re fu­tu­ri­stic...be­cau­se should you want a tra­di­tio­nal ya­cht it is be­st to do away wi­th a SWATH.

Left, This 50 me­tre long SWATH wi­th as ma­ny as th­ree stru­ts to ea­ch tor­pe­do sha­ped strut is by Espen Øi­no for Da­ni­sh Yachts. Right, At fir­st sight this 41 me­tre long SWATH by Ken Frei­vo­kh De­si­gn looks mo­re li­ke a spa­ce ship than a Swath-ya­cht.

”WHY NOT” was con­cei­ved as an iti­ne­rant island ca­pa­ble of ope­ning out or of pro­tec­ting itself from on­co­ming seas sim­ply by tur­ning one of its two bo­ws to­wards them.

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