Patent SG-11201408058X-A (SG)
Title: Improved hull of a tugboat and tugboat comprising said improved hull
Inventor: SAVONA UGO
IPC: B63H23/20
Filed: 2013-06-07
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 27 December 2013 (27.12.2013) WIPOIPCT (10) International Publication Number WO 2013/190583 A1 (51) International Patent Classification: B63B 1/04 (2006.01) B63H23/20 (2006.01) B63B 35/66 (2006.01) B63H21/30 (2006.01) (21) International Application Number: (22) International Filing Date: (25) Filing Language: (26) Publication Language: PCT/IT2013/000163 7 June 2013 (07.06.2013) Italian English (30) Priority Data: RM2012A000287 20 June 2012 (20.06.2012) IT (72) Inventor; and (71) Applicant SAVONA, : Ugo [IT/IT]; Via Imperatore Fed- erico, 70,1-90143 Palermo (IT). (74) Agent: FERRIERO, Paolo; Barzano' & Zanardo Roma S.p.A., Via Piemonte, 26,1-00187 Roma (IT). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available)'. ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) (54) Title: IMPROVED HULL OF A TUGBOAT AND TUGBOAT COMPRISING SAID IMPROVED HULL (57) Abstract: The present invention relates to an improved hull (1) of tugboat (R) a for towing/assisting vessel a and having water a plane (G), base a line (B), a main section (SM), as well as a longitudinal axis (L) dividing said hull ( 1) in first and a in a second lat - QQ eral part. Said hull (1) has a bottom ( 1A), a bow, a stern, and an underbody (2) provided with first a keel (11) and second a keel in (12), wherein said first keel (11) is parallel to and facing said second keel (12), first thruster means (3) and second thruster means O (4). Particularly, each keel ( 11, 12) is arranged on a respective side of said underbody (2), in substantially central position, and a is connected to said underbody (2) respectively in correspondence of the bow and the stern of said hull. Said two keels ( 11, 12) extend in depth in substantially perpendicular a manner so as to have a draft equal to or greater than that of said first and second thruster means (3, 4). Furthermore, said first and second thruster means are positioned respectively at the bow and stern of the hull ( 1) and r substantially aligned along said longitudinal axis (L). Said two keels (11, 12), integral with said hull (1), form a tunnel (14) with at C<| least a portion of said bottom (1A). Said hull has a first airfoil (Wl) which extends from said first thruster means (3) to said main ^ section, and airfoil (W2) which a second extends from said second thruster means (4) to said main section, said two airfoils (Wl, W2) being substantially symmetrical with respect to said main section. Each [Continued on next page] oo o 0\ i-H cn i-H o CJ o & WO 2013/190583 A11 lllll llllllll II llllll III lllll lllll lllll lllll III III III lllll lllll lllll llll lllllll llll llll llll airfoil comprises respective a first portion, external to said tunnel (14), which extends from the respective thruster means to the keels, and a second portion, internal to said tunnel 14), which ( extends from the keels to the main section, wherein said first and second thruster means are arranged in said firs portion, external to said tunnel (14), of respective airfoil a (Wl, W2), so that, when a water flow generated is by said thruster means, said water flow is channeled within said tunnel ( 14), following a respective air­ foil (Wl, W2), and only a minimal amount of water of said water flow reaches respectively said second or first thruster means. The present invention also relates to a tugboat which comprises said improved hull.